diff --git a/bio/bellerophon/environment.yaml b/bio/bellerophon/environment.yaml
index 183b281d82..039e9257a3 100644
--- a/bio/bellerophon/environment.yaml
+++ b/bio/bellerophon/environment.yaml
@@ -4,5 +4,5 @@ channels:
   - nodefaults
 dependencies:
   - bellerophon =1.0
-  - samtools =1.15
-  - snakemake-wrapper-utils =0.4
+  - samtools =1.16.1
+  - snakemake-wrapper-utils =0.5.0