diff --git a/wasm/Cargo.lock b/wasm/Cargo.lock
index f61eaff7..99dd52ed 100644
--- a/wasm/Cargo.lock
+++ b/wasm/Cargo.lock
@@ -578,9 +578,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.16"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5be7b54589b581f624f566bf5d8eb2bab1db736c51528720b6bd36b96b55924d"
+checksum = "91fc23aa11be92976ef4729127f1a74adf36d8436f7816b185d18df956790833"
 dependencies = [
  "bytes 1.4.0",
  "fnv",