diff --git a/Cargo.lock b/Cargo.lock
index 6512dc943..24f8e8d7c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -114,6 +114,12 @@ dependencies = [
  "ext-trait",
 ]
 
+[[package]]
+name = "extern-c"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320bea982e85d42441eb25c49b41218e7eaa2657e8f90bc4eca7437376751e23"
+
 [[package]]
 name = "flate2"
 version = "1.0.25"
@@ -622,10 +628,11 @@ checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
 
 [[package]]
 name = "safer-ffi"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
  "async-compat",
  "cratesio-placeholder-package",
+ "extern-c",
  "futures",
  "inventory",
  "libc",
@@ -655,7 +662,7 @@ dependencies = [
 
 [[package]]
 name = "safer_ffi-proc_macros"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
  "macro_rules_attribute",
  "prettyplease",
diff --git a/Cargo.toml b/Cargo.toml
index 45c4642ef..87fab1e89 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ path = "src/_lib.rs"
 
 [package]
 name = "safer-ffi"
-version = "0.1.12"                                                    # Keep in sync
+version = "0.1.13"                                                    # Keep in sync
 authors = ["Daniel Henry-Mantilla <daniel.henry.mantilla@gmail.com>"]
 edition = "2021"
 rust-version = "1.72.1"
@@ -143,7 +143,7 @@ version = "0.0.3"
 
 [dependencies.safer_ffi-proc_macros]
 path = "src/proc_macro"
-version = "=0.1.12"     # Keep in sync
+version = "=0.1.13"     # Keep in sync
 
 [workspace]
 members = [
diff --git a/ffi_tests/Cargo.lock b/ffi_tests/Cargo.lock
index 874df1208..3d405f0c4 100644
--- a/ffi_tests/Cargo.lock
+++ b/ffi_tests/Cargo.lock
@@ -59,6 +59,12 @@ dependencies = [
  "ext-trait",
 ]
 
+[[package]]
+name = "extern-c"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320bea982e85d42441eb25c49b41218e7eaa2657e8f90bc4eca7437376751e23"
+
 [[package]]
 name = "ffi_tests"
 version = "0.1.0"
@@ -331,8 +337,9 @@ checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
 
 [[package]]
 name = "safer-ffi"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
+ "extern-c",
  "futures",
  "inventory",
  "libc",
@@ -348,7 +355,7 @@ dependencies = [
 
 [[package]]
 name = "safer_ffi-proc_macros"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
  "macro_rules_attribute",
  "prettyplease",
diff --git a/js_tests/Cargo.lock b/js_tests/Cargo.lock
index 8ab16abed..d9952b4d8 100644
--- a/js_tests/Cargo.lock
+++ b/js_tests/Cargo.lock
@@ -111,6 +111,12 @@ dependencies = [
  "ext-trait",
 ]
 
+[[package]]
+name = "extern-c"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320bea982e85d42441eb25c49b41218e7eaa2657e8f90bc4eca7437376751e23"
+
 [[package]]
 name = "flate2"
 version = "1.0.25"
@@ -629,9 +635,10 @@ checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
 
 [[package]]
 name = "safer-ffi"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
  "cratesio-placeholder-package",
+ "extern-c",
  "inventory",
  "libc",
  "macro_rules_attribute",
@@ -654,7 +661,7 @@ dependencies = [
 
 [[package]]
 name = "safer_ffi-proc_macros"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
  "macro_rules_attribute",
  "prettyplease",
diff --git a/src/proc_macro/Cargo.toml b/src/proc_macro/Cargo.toml
index 8d6e7eb8d..9d74b86ff 100644
--- a/src/proc_macro/Cargo.toml
+++ b/src/proc_macro/Cargo.toml
@@ -4,7 +4,7 @@ proc-macro = true
 
 [package]
 name = "safer_ffi-proc_macros"
-version = "0.1.12"                                                    # Keep in sync
+version = "0.1.13"                                                    # Keep in sync
 authors = ["Daniel Henry-Mantilla <daniel.henry.mantilla@gmail.com>"]
 edition = "2021"