diff --git a/pkgs/development/python-modules/pyasn1/default.nix b/pkgs/development/python-modules/pyasn1/default.nix
index dc4a86879a32..5f7f86c6317e 100644
--- a/pkgs/development/python-modules/pyasn1/default.nix
+++ b/pkgs/development/python-modules/pyasn1/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "pyasn1";
-  version = "0.6.3";
+  version = "0.6.4";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pyasn1";
     repo = "pyasn1";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-fHpAJ1WSoLwaWuSMcfHjZmnl8oNhADrdjHaYIEmqQiw=";
+    hash = "sha256-ZtsHANVUGk+LF17dEjePDm8ofX61P4f2/BTHqlscNd0=";
   };
 
   build-system = [ setuptools ];