diff --git a/pkgs/development/interpreters/python/default.nix b/pkgs/development/interpreters/python/default.nix
index 4a927d2597ff..7b0a4bfd8591 100644
--- a/pkgs/development/interpreters/python/default.nix
+++ b/pkgs/development/interpreters/python/default.nix
@@ -104,9 +104,9 @@
         major = "3";
         minor = "15";
         patch = "0";
-        suffix = "a5";
+        suffix = "a6";
       };
-      hash = "sha256-/uQNpkULZ1R8B53LKFLooD221X4GQVRmstMpREnbIu8=";
+      hash = "sha256-jipOGyr7k6hNZZ1DGx84RUSz2gCkuP9b81gPB61P+Yk=";
       inherit passthruFun;
     };