diff --git a/llvm.spec b/llvm.spec
index ffff599..56e0f59 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -86,6 +86,9 @@ BuildRequires: perl(Sys::Hostname)
 
 BuildRequires:	graphviz
 
+# This is required because we need "ps" when running LLDB tests
+BuildRequires: procps-ng
+
 %if %{without compat_build}
 # For reproducible pyc file generation
 # See https://docs.fedoraproject.org/en-US/packaging-guidelines/Python_Appendix/#_byte_compilation_reproducibility