diff --git a/conda/meta.yaml b/conda/meta.yaml
index fdb621e651b2aff14773d4056de4b1aec7dcb1d5..821b281f05afce4ca7e7bf34d665bb14924943e2 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -42,6 +42,7 @@ requirements:
     - python-gitlab
     - requests
     - sphinx
+    - smmap <4
     - pyyaml >=5.1
     - twine <3
     - lxml