diff --git a/molecule-requirements.txt b/molecule-requirements.txt
index 034ea3a..c55af13 100644
--- a/molecule-requirements.txt
+++ b/molecule-requirements.txt
@@ -2,6 +2,8 @@
 ansible
 ansi2html
 docker
+# https://github.com/sqlalchemy/dogpile.cache/issues/178
+dogpile.cache>=0.6.5,<0.9.1  # MIT
 pytest
 pytest-cov
 pytest-html