diff --git a/projects/github.com/eliben/pycparser/package.yml b/projects/github.com/eliben/pycparser/package.yml
index d318cc7a..7f84605a 100644
--- a/projects/github.com/eliben/pycparser/package.yml
+++ b/projects/github.com/eliben/pycparser/package.yml
@@ -16,4 +16,8 @@ build:
     - cp -r examples {{prefix}}/pkgshare/
     - run: ln -s python{{deps.python.org.version.marketing}} python{{deps.python.org.version.major}}
       working-directory: '{{prefix}}/lib'
-test: python {{prefix}}/pkgshare/examples/c-to-c.py {{prefix}}/pkgshare/examples/c_files/basic.c
+test:
+  dependencies:
+    linux:
+      llvm.org: '*' # `cpp`
+  script: python {{prefix}}/pkgshare/examples/c-to-c.py {{prefix}}/pkgshare/examples/c_files/basic.c