diff --git a/Cargo.lock b/Cargo.lock
index da7217cfe..be87a0772 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1323,9 +1323,9 @@ checksum = "ad0a93d233ebf96623465aad4046a8d3aa4da22d4f4beba5388838c8a434bbb4"
 
 [[package]]
 name = "h2"
-version = "0.3.15"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f9f29bc9dda355256b2916cf526ab02ce0aeaaaf2bad60d65ef3f12f11dd0f4"
+checksum = "91fc23aa11be92976ef4729127f1a74adf36d8436f7816b185d18df956790833"
 dependencies = [
  "bytes",
  "fnv",