diff --git a/gnu/packages/llvm.scm b/gnu/packages/llvm.scm
index f733a767c2..c0c0100f67 100644
--- a/gnu/packages/llvm.scm
+++ b/gnu/packages/llvm.scm
@@ -965,6 +965,22 @@ (define-public clang-10
                       (base32
                        "06n1yp638rh24xdxv9v2df0qajxbjz4w59b7dd4ky36drwmpi4yh")))))
 
+(define-public libomp-10
+  (package
+    (inherit libomp-11)
+    (version (package-version llvm-10))
+    (source (origin
+              (method url-fetch)
+              (uri (llvm-uri "openmp" version))
+              (sha256
+               (base32
+                "0i4bn84lkpm5w3qkpvwm5z6jdj8fynp7d3bcasa1xyq4is6757yi"))
+              (file-name (string-append "libomp-" version ".tar.xz"))))
+    (native-inputs
+     (modify-inputs (package-native-inputs libomp-11)
+       (replace "clang" clang-10)
+       (replace "llvm" llvm-10)))))
+
 (define-public clang-toolchain-10
   (make-clang-toolchain clang-10))