diff --git a/pkgs/development/python-modules/fastcore/default.nix b/pkgs/development/python-modules/fastcore/default.nix
index 059ab8d4dbc3..d28d9aa2593d 100644
--- a/pkgs/development/python-modules/fastcore/default.nix
+++ b/pkgs/development/python-modules/fastcore/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "fastcore";
-  version = "1.12.2";
+  version = "1.12.5";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "fastai";
     repo = "fastcore";
     tag = finalAttrs.version;
-    hash = "sha256-6nEHriXEQjovcDY9jh/QkwiQc2Wdq/87Nxfa+AhrPj4=";
+    hash = "sha256-LYtjUsyvLejbJkTSWC7l3Yg/YoB+pMBTlzMitbzgR1E=";
   };
 
   build-system = [ setuptools ];