diff --git a/environment.yml b/environment.yml
index fcded8b9..0da15485 100644
--- a/environment.yml
+++ b/environment.yml
@@ -15,7 +15,7 @@ dependencies:
   - infernal>=1.1.4
   - piler-cr
   - pyhmmer>=0.10.4
-  - diamond>=2.1.8
+  - diamond==2.1.8
   - blast>=2.14.0
   - ncbi-amrfinderplus>=3.11.26
   - circos>=0.69.8