diff --git a/conda/recipes/versions.yaml b/conda/recipes/versions.yaml
index 989b670c..733457d2 100644
--- a/conda/recipes/versions.yaml
+++ b/conda/recipes/versions.yaml
@@ -81,7 +81,7 @@ gtest_version:
 ipython_version:
   - '=7.15'
 isort_version:
-  - '=5.0'
+  - '=5.6.4'
 jupyterlab_version:
   - '>=3.0.0,<4.0a0'
 jupyter_packaging_version: