diff --git a/circle.yml b/circle.yml
index ccf67af4..ce59ac97 100644
--- a/circle.yml
+++ b/circle.yml
@@ -16,5 +16,6 @@ dependencies:
 
 test:
   override:
+    - source $HOME/erlang/OTP-18.0.2/activate && make dialyze
     - make -k ci:
         timeout: 3600