diff --git a/.travis.yml b/.travis.yml
index 37a572a9..c3348ce5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -73,6 +73,8 @@ jobs:
       python: 'pypy3.5-6.0'
     - env: TOXENV=pypy3-t45-c45
       python: 'pypy3.5-6.0'
+    - env: TOXENV=py37-t44-c50
+      python: '3.7'
 
     - stage: examples
       python: '3.6'
diff --git a/tox.ini b/tox.ini
index bfe166f6..6ea0c019 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@
 envlist =
     check
     {py27,py34,py35,py36,py37,pypy,pypy3}-{t310,t43,t44,t45}-{c45}
+    py37-t44-c50
     docs
 
 [testenv]
@@ -25,6 +26,7 @@ deps =
 
     c44: coverage==4.4.2
     c45: coverage==4.5.3
+    c50: coverage>=5.0a1,<5.1
 pip_pre = true
 commands =
     pytest {posargs:-vv}