1 files changed, 2 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 777e9b89..51d81d2c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,8 @@ envlist = py26,py27,pypy,py33,py34,py35,py36,docs,pep8,py3pep8
 extras =
    test
 deps =
-    coverage
+    # This must be kept in sync with Jenkinsfile and .travis/install.sh
+    coverage==4.3.4
     ./vectors
 passenv = ARCHFLAGS LDFLAGS CFLAGS INCLUDE LIB LD_LIBRARY_PATH USERNAME
 commands =