diff --git a/pkgs/development/interpreters/python/default.nix b/pkgs/development/interpreters/python/default.nix
index 07d52a532fb4..d74e017d8307 100644
--- a/pkgs/development/interpreters/python/default.nix
+++ b/pkgs/development/interpreters/python/default.nix
@@ -176,10 +176,10 @@ in {
     sourceVersion = {
       major = "3";
       minor = "9";
-      patch = "3";
+      patch = "4";
       suffix = "";
     };
-    sha256 = "MIEQOcZeBMFPxpjkI5R+Rk+TFuaftEYQvThEYEa7grU=";
+    sha256 = "Sw5mRKdvjfhkriSsUApRu/aL0Jj2oXPifTthzcqaoTQ=";
     inherit (darwin) configd;
     inherit passthruFun;
   };