diff --git a/.travis.yml b/.travis.yml
index 39c3e56..52ae64b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ env:
   - PYYAML_VERSION="3.13"
   # - PYYAML_VERSION="4.1"  # this was pulled from the index (!) ..wtf, Ingy?
   - PYYAML_VERSION="4.2b4"
-  - PYYAML_VERSION="5.1
+  - PYYAML_VERSION="5.1"
 
 matrix:
   fast_finish: true