diff --git a/tests/tests.yml b/tests/tests.yml
index 5655d1c..f6bfaa8 100644
--- a/tests/tests.yml
+++ b/tests/tests.yml
@@ -13,9 +13,9 @@
     - smoke27:
         dir: python/smoke
         run: VERSION=2.7 METHOD=virtualenv ./venv.sh
-    - smoke35:
+    - smoke35_optional:
         dir: python/smoke
-        run: VERSION=3.5 METHOD=virtualenv ./venv.sh
+        run: VERSION=3.5 METHOD=virtualenv INSTALL_OR_SKIP=true ./venv.sh
     - smoke36:
         dir: python/smoke
         run: VERSION=3.6 METHOD=virtualenv ./venv.sh
@@ -41,7 +41,6 @@
     - gcc
     - virtualenv
     - python2.7
-    - python3.5
     - python3.6
     - python3.7
     - python3.8