diff --git a/environment.yml b/environment.yml
index ff653d4..3252703 100644
--- a/environment.yml
+++ b/environment.yml
@@ -2,7 +2,7 @@
  channels:
    - https://conda.anaconda.org/conda-forge
  dependencies:
-   - python=3
+   - python=3.9
    - numpy
    - nomkl
    - matplotlib