diff --git a/dev_requirements.txt b/dev_requirements.txt
index 695ce38..8588009 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -5,7 +5,7 @@ sphinx
 sphinx_rtd_theme
 pytest
 pytest-cov
-casbin_sqlalchemy_adapter
+casbin_sqlalchemy_adapter==0.3.2
 coverage
 pypi-publisher
 bumpversion
\ No newline at end of file