diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a459015bc9..8b3bdf806c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 --------------------------------------------------------------------------------
 
+## 0.2.78
+
+Released 2021-09-15.
+
+[changes](https://github.com/rustwasm/wasm-bindgen/compare/0.2.77...0.2.78)
+
+--------------------------------------------------------------------------------
+
 ## 0.2.77
 
 Released 2021-09-08.
diff --git a/Cargo.toml b/Cargo.toml
index bc832fa4df0..519f64ea81f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 readme = "README.md"
@@ -36,15 +36,15 @@ strict-macro = ["wasm-bindgen-macro/strict-macro"]
 xxx_debug_only_print_generated_code = ["wasm-bindgen-macro/xxx_debug_only_print_generated_code"]
 
 [dependencies]
-wasm-bindgen-macro = { path = "crates/macro", version = "=0.2.77" }
+wasm-bindgen-macro = { path = "crates/macro", version = "=0.2.78" }
 serde = { version = "1.0", optional = true }
 serde_json = { version = "1.0", optional = true }
 cfg-if = "1.0.0"
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-js-sys = { path = 'crates/js-sys', version = '0.3.54' }
-wasm-bindgen-test = { path = 'crates/test', version = '=0.3.27' }
-wasm-bindgen-futures = { path = 'crates/futures', version = '=0.4.27' }
+js-sys = { path = 'crates/js-sys', version = '0.3.55' }
+wasm-bindgen-test = { path = 'crates/test', version = '=0.3.28' }
+wasm-bindgen-futures = { path = 'crates/futures', version = '=0.4.28' }
 serde_derive = "1.0"
 wasm-bindgen-test-crate-a = { path = 'tests/crates/a', version = '0.1' }
 wasm-bindgen-test-crate-b = { path = 'tests/crates/b', version = '0.1' }
diff --git a/crates/backend/Cargo.toml b/crates/backend/Cargo.toml
index b5573be4d13..14d65c51cbb 100644
--- a/crates/backend/Cargo.toml
+++ b/crates/backend/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-backend"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/backend"
@@ -22,4 +22,4 @@ log = "0.4"
 proc-macro2 = "1.0"
 quote = '1.0'
 syn = { version = '1.0', features = ['full'] }
-wasm-bindgen-shared = { path = "../shared", version = "=0.2.77" }
+wasm-bindgen-shared = { path = "../shared", version = "=0.2.78" }
diff --git a/crates/cli-support/Cargo.toml b/crates/cli-support/Cargo.toml
index e3964cb5db5..11d5757c5a3 100644
--- a/crates/cli-support/Cargo.toml
+++ b/crates/cli-support/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-cli-support"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/cli-support"
@@ -19,12 +19,12 @@ rustc-demangle = "0.1.13"
 serde_json = "1.0"
 tempfile = "3.0"
 walrus = "0.19.0"
-wasm-bindgen-externref-xform = { path = '../externref-xform', version = '=0.2.77' }
-wasm-bindgen-multi-value-xform = { path = '../multi-value-xform', version = '=0.2.77' }
-wasm-bindgen-shared = { path = "../shared", version = '=0.2.77' }
-wasm-bindgen-threads-xform = { path = '../threads-xform', version = '=0.2.77' }
-wasm-bindgen-wasm-conventions = { path = '../wasm-conventions', version = '=0.2.77' }
-wasm-bindgen-wasm-interpreter = { path = "../wasm-interpreter", version = '=0.2.77' }
+wasm-bindgen-externref-xform = { path = '../externref-xform', version = '=0.2.78' }
+wasm-bindgen-multi-value-xform = { path = '../multi-value-xform', version = '=0.2.78' }
+wasm-bindgen-shared = { path = "../shared", version = '=0.2.78' }
+wasm-bindgen-threads-xform = { path = '../threads-xform', version = '=0.2.78' }
+wasm-bindgen-wasm-conventions = { path = '../wasm-conventions', version = '=0.2.78' }
+wasm-bindgen-wasm-interpreter = { path = "../wasm-interpreter", version = '=0.2.78' }
 wit-text = "0.8.0"
 wit-walrus = "0.6.0"
 wit-validator = "0.2.0"
diff --git a/crates/cli/Cargo.toml b/crates/cli/Cargo.toml
index b8c22ef4b6b..7b23717d796 100644
--- a/crates/cli/Cargo.toml
+++ b/crates/cli/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-cli"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/cli"
@@ -26,8 +26,8 @@ serde = { version = "1.0", features = ['derive'] }
 serde_derive = "1.0"
 serde_json = "1.0"
 walrus = { version = "0.19.0", features = ['parallel'] }
-wasm-bindgen-cli-support = { path = "../cli-support", version = "=0.2.77" }
-wasm-bindgen-shared = { path = "../shared", version = "=0.2.77" }
+wasm-bindgen-cli-support = { path = "../cli-support", version = "=0.2.78" }
+wasm-bindgen-shared = { path = "../shared", version = "=0.2.78" }
 
 [dev-dependencies]
 assert_cmd = "1.0"
diff --git a/crates/externref-xform/Cargo.toml b/crates/externref-xform/Cargo.toml
index de35fa4b7e9..fd67ada3194 100644
--- a/crates/externref-xform/Cargo.toml
+++ b/crates/externref-xform/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-externref-xform"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/externref-xform"
diff --git a/crates/futures/Cargo.toml b/crates/futures/Cargo.toml
index be9699ea1bf..6d6536caa55 100644
--- a/crates/futures/Cargo.toml
+++ b/crates/futures/Cargo.toml
@@ -7,13 +7,13 @@ license = "MIT/Apache-2.0"
 name = "wasm-bindgen-futures"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/futures"
 readme = "./README.md"
-version = "0.4.27"
+version = "0.4.28"
 edition = "2018"
 
 [dependencies]
 cfg-if = "1.0.0"
-js-sys = { path = "../js-sys", version = '0.3.54' }
-wasm-bindgen = { path = "../..", version = '0.2.77' }
+js-sys = { path = "../js-sys", version = '0.3.55' }
+wasm-bindgen = { path = "../..", version = '0.2.78' }
 futures-core =  { version = '0.3.8', default-features = false, optional = true }
 
 [features]
@@ -28,6 +28,6 @@ features = [
 ]
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-wasm-bindgen-test = { path = '../test', version = '0.3.27' }
+wasm-bindgen-test = { path = '../test', version = '0.3.28' }
 futures-channel-preview = { version = "0.3.0-alpha.18" }
 futures-lite = { version = "1.11.3", default-features = false }
diff --git a/crates/js-sys/Cargo.toml b/crates/js-sys/Cargo.toml
index c7dcb160d3b..e365b34404d 100644
--- a/crates/js-sys/Cargo.toml
+++ b/crates/js-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "js-sys"
-version = "0.3.54"
+version = "0.3.55"
 authors = ["The wasm-bindgen Developers"]
 readme = "./README.md"
 categories = ["wasm"]
@@ -19,8 +19,8 @@ test = false
 doctest = false
 
 [dependencies]
-wasm-bindgen = { path = "../..", version = "0.2.77" }
+wasm-bindgen = { path = "../..", version = "0.2.78" }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-wasm-bindgen-test = { path = '../test', version = '=0.3.27' }
-wasm-bindgen-futures = { path = '../futures', version = '0.4.27' }
+wasm-bindgen-test = { path = '../test', version = '=0.3.28' }
+wasm-bindgen-futures = { path = '../futures', version = '0.4.28' }
diff --git a/crates/macro-support/Cargo.toml b/crates/macro-support/Cargo.toml
index 2bd912d2b71..1df604db0a4 100644
--- a/crates/macro-support/Cargo.toml
+++ b/crates/macro-support/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-macro-support"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/macro-support"
@@ -20,5 +20,5 @@ strict-macro = []
 syn = { version = '1.0.67', features = ['visit', 'full'] }
 quote = '1.0'
 proc-macro2 = "1.0"
-wasm-bindgen-backend = { path = "../backend", version = "=0.2.77" }
-wasm-bindgen-shared = { path = "../shared", version = "=0.2.77" }
+wasm-bindgen-backend = { path = "../backend", version = "=0.2.78" }
+wasm-bindgen-shared = { path = "../shared", version = "=0.2.78" }
diff --git a/crates/macro/Cargo.toml b/crates/macro/Cargo.toml
index 08eeecacf37..7bac44aad0a 100644
--- a/crates/macro/Cargo.toml
+++ b/crates/macro/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-macro"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/macro"
@@ -20,10 +20,10 @@ xxx_debug_only_print_generated_code = []
 strict-macro = ["wasm-bindgen-macro-support/strict-macro"]
 
 [dependencies]
-wasm-bindgen-macro-support = { path = "../macro-support", version = "=0.2.77" }
+wasm-bindgen-macro-support = { path = "../macro-support", version = "=0.2.78" }
 quote = "1.0"
 
 [dev-dependencies]
 trybuild = "1.0"
-wasm-bindgen = { path = "../..", version = "0.2.77", features = ['strict-macro'] }
-wasm-bindgen-futures = { path = "../futures", version = "0.4.27" }
+wasm-bindgen = { path = "../..", version = "0.2.78", features = ['strict-macro'] }
+wasm-bindgen-futures = { path = "../futures", version = "0.4.28" }
diff --git a/crates/multi-value-xform/Cargo.toml b/crates/multi-value-xform/Cargo.toml
index e4db9b8469e..375054ca0f4 100644
--- a/crates/multi-value-xform/Cargo.toml
+++ b/crates/multi-value-xform/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-multi-value-xform"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/multi-value-xform"
diff --git a/crates/shared/Cargo.toml b/crates/shared/Cargo.toml
index 72a079c4da4..33ad5873235 100644
--- a/crates/shared/Cargo.toml
+++ b/crates/shared/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-shared"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/shared"
diff --git a/crates/test-macro/Cargo.toml b/crates/test-macro/Cargo.toml
index 6bffae11731..ef22ea97b34 100644
--- a/crates/test-macro/Cargo.toml
+++ b/crates/test-macro/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-test-macro"
-version = "0.3.27"
+version = "0.3.28"
 authors = ["The wasm-bindgen Developers"]
 description = "Internal testing macro for wasm-bindgen"
 license = "MIT/Apache-2.0"
diff --git a/crates/test/Cargo.toml b/crates/test/Cargo.toml
index fa050ea2d85..994d9b7c4e6 100644
--- a/crates/test/Cargo.toml
+++ b/crates/test/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-test"
-version = "0.3.27"
+version = "0.3.28"
 authors = ["The wasm-bindgen Developers"]
 description = "Internal testing crate for wasm-bindgen"
 license = "MIT/Apache-2.0"
@@ -9,11 +9,11 @@ edition = "2018"
 
 [dependencies]
 console_error_panic_hook = '0.1'
-js-sys = { path = '../js-sys', version = '0.3.54' }
+js-sys = { path = '../js-sys', version = '0.3.55' }
 scoped-tls = "1.0"
-wasm-bindgen = { path = '../..', version = '0.2.77' }
-wasm-bindgen-futures = { path = '../futures', version = '0.4.27' }
-wasm-bindgen-test-macro = { path = '../test-macro', version = '=0.3.27' }
+wasm-bindgen = { path = '../..', version = '0.2.78' }
+wasm-bindgen-futures = { path = '../futures', version = '0.4.28' }
+wasm-bindgen-test-macro = { path = '../test-macro', version = '=0.3.28' }
 
 [lib]
 test = false
diff --git a/crates/threads-xform/Cargo.toml b/crates/threads-xform/Cargo.toml
index 2970d93e65b..afb8089d9e3 100644
--- a/crates/threads-xform/Cargo.toml
+++ b/crates/threads-xform/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-threads-xform"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/threads-xform"
@@ -14,4 +14,4 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0"
 walrus = "0.19.0"
-wasm-bindgen-wasm-conventions = { path = "../wasm-conventions", version = "=0.2.77" }
+wasm-bindgen-wasm-conventions = { path = "../wasm-conventions", version = "=0.2.78" }
diff --git a/crates/wasm-conventions/Cargo.toml b/crates/wasm-conventions/Cargo.toml
index 3c44fc8888c..51f2095aa70 100644
--- a/crates/wasm-conventions/Cargo.toml
+++ b/crates/wasm-conventions/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-wasm-conventions"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/wasm-conventions"
diff --git a/crates/wasm-interpreter/Cargo.toml b/crates/wasm-interpreter/Cargo.toml
index 2bd9ecb0678..84c9dfeee6a 100644
--- a/crates/wasm-interpreter/Cargo.toml
+++ b/crates/wasm-interpreter/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasm-bindgen-wasm-interpreter"
-version = "0.2.77"
+version = "0.2.78"
 authors = ["The wasm-bindgen Developers"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/rustwasm/wasm-bindgen/tree/master/crates/wasm-interpreter"
@@ -15,7 +15,7 @@ edition = '2018'
 anyhow = "1.0"
 log = "0.4"
 walrus = "0.19.0"
-wasm-bindgen-wasm-conventions = { path = "../wasm-conventions", version = "0.2.77" }
+wasm-bindgen-wasm-conventions = { path = "../wasm-conventions", version = "0.2.78" }
 
 [dev-dependencies]
 tempfile = "3"
diff --git a/crates/web-sys/Cargo.toml b/crates/web-sys/Cargo.toml
index afe4c102f79..666aadddc21 100644
--- a/crates/web-sys/Cargo.toml
+++ b/crates/web-sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "web-sys"
-version = "0.3.54"
+version = "0.3.55"
 authors = ["The wasm-bindgen Developers"]
 readme = "./README.md"
 homepage = "https://rustwasm.github.io/wasm-bindgen/web-sys/index.html"
@@ -21,12 +21,12 @@ doctest = false
 test = false
 
 [dependencies]
-wasm-bindgen = { path = "../..", version = "0.2.77" }
-js-sys = { path = '../js-sys', version = '0.3.54' }
+wasm-bindgen = { path = "../..", version = "0.2.78" }
+js-sys = { path = '../js-sys', version = '0.3.55' }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
-wasm-bindgen-test = { path = '../test', version = '0.3.27' }
-wasm-bindgen-futures = { path = '../futures', version = '0.4.27' }
+wasm-bindgen-test = { path = '../test', version = '0.3.28' }
+wasm-bindgen-futures = { path = '../futures', version = '0.4.28' }
 
 # This list is auto-generated by the wasm-bindgen-webidl program
 [features]
diff --git a/crates/webidl/Cargo.toml b/crates/webidl/Cargo.toml
index 7712f20d009..fcf13b40bcc 100644
--- a/crates/webidl/Cargo.toml
+++ b/crates/webidl/Cargo.toml
@@ -20,7 +20,7 @@ log = "0.4.1"
 proc-macro2 = "1.0"
 quote = '1.0'
 syn = { version = '1.0', features = ['full'] }
-wasm-bindgen-backend = { version = "=0.2.77", path = "../backend" }
+wasm-bindgen-backend = { version = "=0.2.78", path = "../backend" }
 weedle = "0.12"
 lazy_static = "1.0.2"
 sourcefile = "0.1"
diff --git a/examples/add/Cargo.toml b/examples/add/Cargo.toml
index 82f547e1985..ca7eac73a81 100644
--- a/examples/add/Cargo.toml
+++ b/examples/add/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/canvas/Cargo.toml b/examples/canvas/Cargo.toml
index 224339d4f03..8f8f50818c7 100644
--- a/examples/canvas/Cargo.toml
+++ b/examples/canvas/Cargo.toml
@@ -8,8 +8,8 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-js-sys = "0.3.54"
-wasm-bindgen = "0.2.77"
+js-sys = "0.3.55"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/char/Cargo.toml b/examples/char/Cargo.toml
index f0778ffdf5c..829f1e8a778 100644
--- a/examples/char/Cargo.toml
+++ b/examples/char/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/closures/Cargo.toml b/examples/closures/Cargo.toml
index 2144176ae41..9bf60704171 100644
--- a/examples/closures/Cargo.toml
+++ b/examples/closures/Cargo.toml
@@ -8,8 +8,8 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
-js-sys = "0.3.54"
+wasm-bindgen = "0.2.78"
+js-sys = "0.3.55"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/console_log/Cargo.toml b/examples/console_log/Cargo.toml
index d270e2eb092..dfd5af0f8f3 100644
--- a/examples/console_log/Cargo.toml
+++ b/examples/console_log/Cargo.toml
@@ -8,5 +8,5 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
-web-sys = { version = "0.3.54", features = ['console'] }
+wasm-bindgen = "0.2.78"
+web-sys = { version = "0.3.55", features = ['console'] }
diff --git a/examples/deno/Cargo.toml b/examples/deno/Cargo.toml
index 40c039be712..fdb90638ba6 100644
--- a/examples/deno/Cargo.toml
+++ b/examples/deno/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/dom/Cargo.toml b/examples/dom/Cargo.toml
index 552594fe831..7b27598c776 100644
--- a/examples/dom/Cargo.toml
+++ b/examples/dom/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/duck-typed-interfaces/Cargo.toml b/examples/duck-typed-interfaces/Cargo.toml
index eb5a137599d..5a0b91fe1d8 100644
--- a/examples/duck-typed-interfaces/Cargo.toml
+++ b/examples/duck-typed-interfaces/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/fetch/Cargo.toml b/examples/fetch/Cargo.toml
index c6500da8cd8..c9290c4e2b4 100644
--- a/examples/fetch/Cargo.toml
+++ b/examples/fetch/Cargo.toml
@@ -8,9 +8,9 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = { version = "0.2.77", features = ["serde-serialize"]  }
-js-sys = "0.3.54"
-wasm-bindgen-futures = "0.4.27"
+wasm-bindgen = { version = "0.2.78", features = ["serde-serialize"]  }
+js-sys = "0.3.55"
+wasm-bindgen-futures = "0.4.28"
 serde = { version = "1.0.80", features = ["derive"] }
 serde_derive = "^1.0.59"
 
diff --git a/examples/guide-supported-types-examples/Cargo.toml b/examples/guide-supported-types-examples/Cargo.toml
index e85fd9aeba0..a11caa1980f 100644
--- a/examples/guide-supported-types-examples/Cargo.toml
+++ b/examples/guide-supported-types-examples/Cargo.toml
@@ -8,5 +8,5 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
-js-sys = "0.3.54"
+wasm-bindgen = "0.2.78"
+js-sys = "0.3.55"
diff --git a/examples/hello_world/Cargo.toml b/examples/hello_world/Cargo.toml
index 8dd7bd12903..fe5b3431c9a 100644
--- a/examples/hello_world/Cargo.toml
+++ b/examples/hello_world/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/import_js/crate/Cargo.toml b/examples/import_js/crate/Cargo.toml
index f603c6e14a8..c2a4cc10ee3 100644
--- a/examples/import_js/crate/Cargo.toml
+++ b/examples/import_js/crate/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/julia_set/Cargo.toml b/examples/julia_set/Cargo.toml
index 5a4f9fa4cdd..2261e7b4b8b 100644
--- a/examples/julia_set/Cargo.toml
+++ b/examples/julia_set/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/paint/Cargo.toml b/examples/paint/Cargo.toml
index 7539bcbe19b..a8706df03e6 100644
--- a/examples/paint/Cargo.toml
+++ b/examples/paint/Cargo.toml
@@ -8,8 +8,8 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-js-sys = "0.3.54"
-wasm-bindgen = "0.2.77"
+js-sys = "0.3.55"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/performance/Cargo.toml b/examples/performance/Cargo.toml
index 027751fe728..00944341225 100644
--- a/examples/performance/Cargo.toml
+++ b/examples/performance/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 humantime = "2"
 
 [dependencies.web-sys]
diff --git a/examples/raytrace-parallel/Cargo.toml b/examples/raytrace-parallel/Cargo.toml
index 5ecc7c74b25..f04c5371882 100644
--- a/examples/raytrace-parallel/Cargo.toml
+++ b/examples/raytrace-parallel/Cargo.toml
@@ -9,13 +9,13 @@ crate-type = ["cdylib"]
 
 [dependencies]
 console_error_panic_hook = "0.1"
-js-sys = "0.3.54"
+js-sys = "0.3.55"
 rayon = "1.1.0"
 rayon-core = "1.5.0"
 raytracer = { git = 'https://github.com/alexcrichton/raytracer', branch = 'update-deps' }
 futures-channel-preview = "0.3.0-alpha.18"
-wasm-bindgen = { version = "0.2.77", features = ['serde-serialize'] }
-wasm-bindgen-futures = "0.4.27"
+wasm-bindgen = { version = "0.2.78", features = ['serde-serialize'] }
+wasm-bindgen-futures = "0.4.28"
 
 [dependencies.web-sys]
 version = "0.3.23"
diff --git a/examples/request-animation-frame/Cargo.toml b/examples/request-animation-frame/Cargo.toml
index 51eb6898ad5..784faac0bb9 100644
--- a/examples/request-animation-frame/Cargo.toml
+++ b/examples/request-animation-frame/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/todomvc/Cargo.toml b/examples/todomvc/Cargo.toml
index e8d294e05ad..a63e950d6b3 100644
--- a/examples/todomvc/Cargo.toml
+++ b/examples/todomvc/Cargo.toml
@@ -11,8 +11,8 @@ crate-type = ["cdylib"]
 askama = "0.10.0"
 
 [dependencies]
-js-sys = "0.3.54"
-wasm-bindgen = "0.2.77"
+js-sys = "0.3.55"
+wasm-bindgen = "0.2.78"
 askama = "0.10.0"
 console_error_panic_hook = "0.1.5"
 
diff --git a/examples/wasm-in-wasm-imports/Cargo.toml b/examples/wasm-in-wasm-imports/Cargo.toml
index 17ce459916d..a4cdee998af 100644
--- a/examples/wasm-in-wasm-imports/Cargo.toml
+++ b/examples/wasm-in-wasm-imports/Cargo.toml
@@ -8,6 +8,6 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
-js-sys = "0.3.54"
-wasm-bindgen-futures = "0.4.27"
+wasm-bindgen = "0.2.78"
+js-sys = "0.3.55"
+wasm-bindgen-futures = "0.4.28"
diff --git a/examples/wasm-in-wasm/Cargo.toml b/examples/wasm-in-wasm/Cargo.toml
index 70ee58148c9..8eab09bbf73 100644
--- a/examples/wasm-in-wasm/Cargo.toml
+++ b/examples/wasm-in-wasm/Cargo.toml
@@ -8,6 +8,6 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
-js-sys = "0.3.54"
-wasm-bindgen-futures = "0.4.27"
+wasm-bindgen = "0.2.78"
+js-sys = "0.3.55"
+wasm-bindgen-futures = "0.4.28"
diff --git a/examples/wasm-in-web-worker/Cargo.toml b/examples/wasm-in-web-worker/Cargo.toml
index 245f2b98bd4..f3f4e130adf 100644
--- a/examples/wasm-in-web-worker/Cargo.toml
+++ b/examples/wasm-in-web-worker/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 console_error_panic_hook = { version = "0.1.6", optional = true }
 
 [dependencies.web-sys]
diff --git a/examples/wasm2js/Cargo.toml b/examples/wasm2js/Cargo.toml
index d5fb1e3f359..db3f8effb81 100644
--- a/examples/wasm2js/Cargo.toml
+++ b/examples/wasm2js/Cargo.toml
@@ -8,4 +8,4 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
diff --git a/examples/weather_report/Cargo.toml b/examples/weather_report/Cargo.toml
index 776c05f380f..f7568574cbd 100644
--- a/examples/weather_report/Cargo.toml
+++ b/examples/weather_report/Cargo.toml
@@ -15,7 +15,7 @@ chrono = "0.4.11"
 reqwest = "0.10.6"
 wasm-bindgen-futures = "0.4.1"
 json= "*"
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 gloo = "0.2.1"
 
 [dependencies.web-sys]
diff --git a/examples/webaudio/Cargo.toml b/examples/webaudio/Cargo.toml
index 408a6705fd7..67f9c1ce8c2 100644
--- a/examples/webaudio/Cargo.toml
+++ b/examples/webaudio/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/webgl/Cargo.toml b/examples/webgl/Cargo.toml
index bec58131896..b77d4739e26 100644
--- a/examples/webgl/Cargo.toml
+++ b/examples/webgl/Cargo.toml
@@ -8,8 +8,8 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-js-sys = "0.3.54"
-wasm-bindgen = "0.2.77"
+js-sys = "0.3.55"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"
diff --git a/examples/webrtc_datachannel/Cargo.toml b/examples/webrtc_datachannel/Cargo.toml
index 3dd4d1e1109..710b79e6f3b 100644
--- a/examples/webrtc_datachannel/Cargo.toml
+++ b/examples/webrtc_datachannel/Cargo.toml
@@ -8,9 +8,9 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 js-sys = "0.3"
-wasm-bindgen-futures = "0.4.27"
+wasm-bindgen-futures = "0.4.28"
 
 [dependencies.web-sys]
 version = "0.3.22"
diff --git a/examples/websockets/Cargo.toml b/examples/websockets/Cargo.toml
index eab734413f0..ad6fb8e813e 100644
--- a/examples/websockets/Cargo.toml
+++ b/examples/websockets/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 js-sys = "0.3"
 
 [dependencies.web-sys]
diff --git a/examples/webxr/Cargo.toml b/examples/webxr/Cargo.toml
index 03d5d6fe058..cb9eaa3c545 100644
--- a/examples/webxr/Cargo.toml
+++ b/examples/webxr/Cargo.toml
@@ -9,9 +9,9 @@ crate-type = ["cdylib"]
 
 [dependencies]
 futures = "0.3.4"
-js-sys = "0.3.54"
-wasm-bindgen = {version = "0.2.77", features = ["serde-serialize"]}
-wasm-bindgen-futures = "0.4.27"
+js-sys = "0.3.55"
+wasm-bindgen = {version = "0.2.78", features = ["serde-serialize"]}
+wasm-bindgen-futures = "0.4.28"
 serde = { version = "1.0.80", features = ["derive"] }
 serde_derive = "^1.0.59"
 
diff --git a/examples/without-a-bundler/Cargo.toml b/examples/without-a-bundler/Cargo.toml
index 22d81a670d3..af7df8f20f4 100644
--- a/examples/without-a-bundler/Cargo.toml
+++ b/examples/without-a-bundler/Cargo.toml
@@ -8,7 +8,7 @@ edition = "2018"
 crate-type = ["cdylib"]
 
 [dependencies]
-wasm-bindgen = "0.2.77"
+wasm-bindgen = "0.2.78"
 
 [dependencies.web-sys]
 version = "0.3.4"