diff --git a/.travis.yml b/.travis.yml
index 34acd952..54a6befd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,7 +33,7 @@ env:
     - MONGODB_3_4=3.4.17
     - MONGODB_3_6=3.6.12
     - PYMONGO_3_6=3.6
-    - PYMONGO_3_4=3.4.x
+    - PYMONGO_3_4=3.4
   matrix:
     - MONGODB=${MONGODB_3_4} PYMONGO=${PYMONGO_3_6}
 
diff --git a/tox.ini b/tox.ini
index 5e62e58b..a1ae8444 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = {py27,py35,pypy,pypy3}-{mg35,mg3x}
+envlist = {py27,py35,pypy,pypy3}-{mg34,mg36}
 
 [testenv]
 commands =