diff --git a/propeller.iml b/propeller.iml
index 073e101..f3f76e0 100644
--- a/propeller.iml
+++ b/propeller.iml
@@ -31,6 +31,7 @@
     <orderEntry type="library" name="Leiningen: org.clojure/google-closure-library-third-party:0.0-20170809-b9c14c6b" level="project" />
     <orderEntry type="library" name="Leiningen: org.clojure/google-closure-library:0.0-20170809-b9c14c6b" level="project" />
     <orderEntry type="library" name="Leiningen: org.clojure/spec.alpha:0.2.176" level="project" />
+    <orderEntry type="library" name="Leiningen: org.clojure/test.check:1.1.0" level="project" />
     <orderEntry type="library" name="Leiningen: org.clojure/tools.reader:1.1.0" level="project" />
     <orderEntry type="library" name="Leiningen: org.mozilla/rhino:1.7R5" level="project" />
   </component>