diff --git a/environment.yml b/environment.yml
index eb45195..51ecb6a 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,12 +1,11 @@
 name: seq2HLA
 channels:
-  - bioconda
-  - anaconda
+  - nodefaults
   - conda-forge
-  - defaults
+  - bioconda
 dependencies:
   - biopython=1.79
   - bowtie=1.3.1
   - numpy=1.21.5
   - scipy=1.7.3
-  - python=3.7.16
+  - python=3.7.12