diff --git a/pkgs/development/libraries/py3c/default.nix b/pkgs/development/libraries/py3c/default.nix
index e46d01d0627a..c3eb3bfd1a1d 100644
--- a/pkgs/development/libraries/py3c/default.nix
+++ b/pkgs/development/libraries/py3c/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "py3c";
-  version = "1.3.1";
+  version = "1.4";
 
   src = fetchFromGitHub {
     owner = "encukou";
     repo = pname;
     rev = "v${version}";
-    sha256 = "04i2z7hrig78clc59q3i1z2hh24g7z1bfvxznlzxv00d4s57nhpi";
+    sha256 = "sha256-v8+0J56sZVbGdBlOotObUa10/zFMTvfXdMYRsKhyZaY=";
   };
 
   postPatch = ''