diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index dc1b624..abb1660 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -30,7 +30,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
           channels: conda-forge,defaults,bioconda
           auto-activate-base: false
-          auto-update-conda: true
+          auto-update-conda: false
 
       - name: Test
         shell: bash -l {0}