diff --git a/pkgs/development/python-modules/fastcore/default.nix b/pkgs/development/python-modules/fastcore/default.nix
index d65c75556af4..d7f6d3b67ae9 100644
--- a/pkgs/development/python-modules/fastcore/default.nix
+++ b/pkgs/development/python-modules/fastcore/default.nix
@@ -9,7 +9,7 @@
 
 buildPythonPackage rec {
   pname = "fastcore";
-  version = "1.7.23";
+  version = "1.7.25";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -17,7 +17,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "fastai";
     repo = "fastcore";
-    rev = "refs/tags/${version}";
+    tag = version;
     hash = "sha256-YsZBPcGWKxE5Cl3HCmB2ZDecFuQa5Q5aTEbZ5ijmB24=";
   };