diff --git a/var/spack/repos/builtin/packages/creduce/package.py b/var/spack/repos/builtin/packages/creduce/package.py
index 2756a80a21b..c5cb15d8ff1 100644
--- a/var/spack/repos/builtin/packages/creduce/package.py
+++ b/var/spack/repos/builtin/packages/creduce/package.py
@@ -22,6 +22,7 @@ class Creduce(CMakePackage):
 
     depends_on("flex")
     depends_on("libxml2")
+    depends_on("llvm")
     depends_on("llvm@8.0.0", when="@:2.10")
     depends_on("perl")
     depends_on("perl-exporter-lite")