diff --git a/pkgs/development/compilers/llvm/common/default.nix b/pkgs/development/compilers/llvm/common/default.nix
index 116d7c6406e4..5a108a4442ff 100644
--- a/pkgs/development/compilers/llvm/common/default.nix
+++ b/pkgs/development/compilers/llvm/common/default.nix
@@ -501,7 +501,7 @@ let
                 })
               ]
           ++
-            lib.optional (lib.versionAtLeast metadata.release_version "20")
+            lib.optional (lib.versions.major metadata.release_version == "20")
               # Fix OrcJIT tests with page sizes > 16k
               # PR: https://github.com/llvm/llvm-project/pull/127115
               (
diff --git a/pkgs/development/compilers/llvm/default.nix b/pkgs/development/compilers/llvm/default.nix
index 68730c5c96d9..efedb085e94e 100644
--- a/pkgs/development/compilers/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/default.nix
@@ -32,9 +32,9 @@ let
     "19.1.7".officialRelease.sha256 = "sha256-cZAB5vZjeTsXt9QHbP5xluWNQnAHByHtHnAhVDV0E6I=";
     "20.1.0-rc2".officialRelease.sha256 = "sha256-lBx+MWfYBM6XSJozacALMGlo0DUUWqnsBQyO8lDljSo=";
     "21.0.0-git".gitRelease = {
-      rev = "c9f1d2cbf18990311ea1287cc154e3784a10a3b0";
-      rev-version = "21.0.0-unstable-2025-02-10";
-      sha256 = "sha256-ggH32zM85geN0c0LPLBv7VAObi67AxPlTJ4YgbT4s7M=";
+      rev = "ef9f0b3c414a5d55e694829514d7b2ff8736d3c3";
+      rev-version = "21.0.0-unstable-2025-02-17";
+      sha256 = "sha256-EpMIADP2aIY68Ys1/Sl6hg1ew0An9ik0c17anxBEl1w=";
     };
   } // llvmVersions;