diff --git a/build/environment.yml b/build/environment.yml
index 70f31b8..9bc6092 100644
--- a/build/environment.yml
+++ b/build/environment.yml
@@ -8,4 +8,5 @@ dependencies:
   - snakemake>=7.14.0
   - pyyaml>=6.0
   - click>=8.1.3
-  - jinja2>=3.0.2
\ No newline at end of file
+  - jinja2>=3.0.2
+  - mamba<1.4.2
\ No newline at end of file