diff --git a/tests/integration/requirements.txt b/tests/integration/requirements.txt
index 45f89aef7..abf1acc04 100644
--- a/tests/integration/requirements.txt
+++ b/tests/integration/requirements.txt
@@ -1,5 +1,6 @@
 hvac >= 0.10.6, != 0.10.12, != 0.10.13, < 1.0.0 ; python_version == '2.7' # bugs in 0.10.12 and 0.10.13 prevent it from working in Python 2
-hvac >= 0.10.6 ; python_version >= '3.5'
+hvac >= 0.10.6, < 1.0.0 ; python_version == '3.5' # py3.5 support will be dropped in 1.0.0
+hvac >= 0.10.6 ; python_version >= '3.6'
 
 # these should be satisfied naturally by the requests versions required by hvac anyway
 urllib3 >= 1.15 ; python_version >= '3.6' # we need raise_on_status for retry support to raise the correct exceptions https://github.com/urllib3/urllib3/blob/main/CHANGES.rst#115-2016-04-06