diff --git a/setup.py b/setup.py
index dd31c5e51ca9ef87962bdc70f397271ae0d05626..7b9936e8e568a7543a6f4c12507c4b227a824828 100644
--- a/setup.py
+++ b/setup.py
@@ -105,6 +105,10 @@ def main():
             ],
 
           packages = [ "meshpy" ],
+          install_requires=[
+                  "pytools>=2011.2",
+                  "pytest>=2",
+                  ],
           ext_modules = [
             Extension(
               "meshpy._triangle",