diff --git a/environment.yml b/environment.yml
index 4423fce..1baea78 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,4 +3,4 @@ dependencies:
   - bioconda::pysam
   - bioconda::pybedtools
   - conda-forge::pandas
-  - bioconda::biopython
\ No newline at end of file
+  - conda-forge::biopython=1.83
\ No newline at end of file