diff --git a/tests/requirements-py3.txt b/tests/requirements-py3.txt
index 2a89763a5..ed189c66c 100644
--- a/tests/requirements-py3.txt
+++ b/tests/requirements-py3.txt
@@ -1,6 +1,6 @@
-pytest==2.7.3
+pytest==2.9.2
 pytest-twisted
-pytest-cov
+pytest-cov==2.2.1
 testfixtures
 jmespath
 leveldb
diff --git a/tests/requirements.txt b/tests/requirements.txt
index 8901fe16b..9d0c3c996 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -2,9 +2,9 @@
 mock
 mitmproxy==0.10.1
 netlib==0.10.1
-pytest==2.7.3
+pytest==2.9.2
 pytest-twisted
-pytest-cov
+pytest-cov==2.2.1
 jmespath
 testfixtures
 # optional for shell wrapper tests