diff --git a/bio/paladin/align/environment.yaml b/bio/paladin/align/environment.yaml
index 5572d680be..849b7c6481 100644
--- a/bio/paladin/align/environment.yaml
+++ b/bio/paladin/align/environment.yaml
@@ -4,4 +4,4 @@ channels:
   - nodefaults
 dependencies:
   - paladin =1.4.6
-  - samtools =1.17
+  - samtools =1.18