diff --git a/pkgs/ngtcp2/default.nix b/pkgs/ngtcp2/default.nix
index d4f4cc4..3dd8e6f 100644
--- a/pkgs/ngtcp2/default.nix
+++ b/pkgs/ngtcp2/default.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation rec {
   pname = "ngtcp2";
-  version = "20210117";
+  version = "20210319";
 
   src = fetchFromGitHub {
     owner = "ngtcp2";
     repo = "ngtcp2";
-    rev = "9c41c641a76670a7a4157f93376ccd3a1ebf1b87";
-    sha256 = "12v9br6szchqr5g91bwi5nzpzvn9gddqcmh62lhpshzn064na40x";
+    rev = "a4380654e03124ab04a0dd36e8519891fe54f9d5";
+    sha256 = "0hysrx01mqnpqvh8wnq4y54qidqsbjfjxf6lqz5143pbl88a07jq";
   };
 
   outputs = [ "out" "dev" ];