diff --git a/python-websockets.changes b/python-websockets.changes
index aabd648..bf5634b 100644
--- a/python-websockets.changes
+++ b/python-websockets.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sat Oct  7 16:20:14 UTC 2017 - stefan.bruens@rwth-aachen.de
+
+- Add WEBSOCKETS_TESTS_TIMEOUT_FACTOR=5, otherwise tests in several
+  projects fail
+
 -------------------------------------------------------------------
 Thu Sep  7 22:42:52 UTC 2017 - toddrme2178@gmail.com
 
diff --git a/python-websockets.spec b/python-websockets.spec
index c4abfef..cb1faba 100644
--- a/python-websockets.spec
+++ b/python-websockets.spec
@@ -56,6 +56,8 @@ export CFLAGS="%{optflags}"
 
 %if %{with test}
 %check
+# Test execution speed depends on BS load and architecture, relax
+export WEBSOCKETS_TESTS_TIMEOUT_FACTOR=5
 %python_exec setup.py test
 %endif