diff --git a/pkgs/applications/science/logic/lean4/default.nix b/pkgs/applications/science/logic/lean4/default.nix
index 092489f84456..fe7088075cf7 100644
--- a/pkgs/applications/science/logic/lean4/default.nix
+++ b/pkgs/applications/science/logic/lean4/default.nix
@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation rec {
   pname = "lean4";
-  version = "4.4.0";
+  version = "4.5.0";
 
   src = fetchFromGitHub {
     owner = "leanprover";
     repo = "lean4";
     rev = "v${version}";
-    hash = "sha256-lU67wjl6yJP2r97lHYxrJqn+JhqMcBIbz/+qlCgY3/o=";
+    hash = "sha256-KTCTk4Fpbmm7FsUo03tAvenC6HuB3zJGax6iGTwLaXM=";
   };
 
   postPatch = ''