diff --git a/setup.cfg b/setup.cfg
index bf835213f..6db9029ac 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -50,7 +50,7 @@ dev =
     numpydoc
     pre-commit
     pydata-sphinx-theme
-    pyepics>=3.4.2
+    pyepics>=3.4.2,<3.5.7
     pytest
     pytest-asyncio
     pytest-cov