diff --git a/Cargo.lock b/Cargo.lock
index f22f328..d15496a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -428,9 +428,9 @@ dependencies = [
 
 [[package]]
 name = "h2"
-version = "0.3.13"
+version = "0.3.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37a82c6d637fc9515a4694bbf1cb2457b79d81ce52b3108bdeea58b07dd34a57"
+checksum = "91fc23aa11be92976ef4729127f1a74adf36d8436f7816b185d18df956790833"
 dependencies = [
  "bytes",
  "fnv",