diff --git a/env.yml b/env.yml
index 1d744b8..521aabc 100644
--- a/env.yml
+++ b/env.yml
@@ -24,7 +24,7 @@ dependencies:
   - conda-forge::biopython
   - conda-forge::ipykernel
   - conda-forge::numpy<=1.21
-  - conda-forge::pandas
+  - conda-forge::pandas==1.5.1
   - conda-forge::scanpy
   # R
   - conda-forge::r-base>=4.0