diff --git a/llvm13.changes b/llvm13.changes
index e16e6b4..18ec839 100644
--- a/llvm13.changes
+++ b/llvm13.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Tue Nov  2 21:18:57 UTC 2021 - Aaron Puchert <aaronpuchert@alice-dsl.net>
+
+- Let clang recommend gcc and glibc-devel as we need both for
+  building executables. No hard requirement because Clang can be
+  used as a frontend only. (boo#1191587)
+- Set minimal CMake version required.
+
 -------------------------------------------------------------------
 Tue Nov  2 13:30:06 UTC 2021 - Martin Liška <mliska@suse.cz>
 
diff --git a/llvm13.spec b/llvm13.spec
index 7a8963c..619a22f 100644
--- a/llvm13.spec
+++ b/llvm13.spec
@@ -139,7 +139,7 @@ Patch27:        llvm-exegesis-link-dylib.patch
 Patch33:        CMake-Look-up-target-subcomponents-in-LLVM_AVAILABLE_LIBS.patch
 Patch34:        llvm-fix-building-with-GCC-12.patch
 BuildRequires:  binutils-devel >= 2.21.90
-BuildRequires:  cmake
+BuildRequires:  cmake >= 3.13.4
 BuildRequires:  fdupes
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
@@ -240,6 +240,8 @@ Requires(post): update-alternatives
 Requires(postun):update-alternatives
 Recommends:     clang%{_sonum}-doc
 Recommends:     clang-tools
+Recommends:     gcc
+Recommends:     glibc-devel
 Recommends:     libstdc++-devel
 Suggests:       libc++-devel