diff --git a/bio/unicycler/environment.yaml b/bio/unicycler/environment.yaml
index 0dc001f41f..01edbe404f 100644
--- a/bio/unicycler/environment.yaml
+++ b/bio/unicycler/environment.yaml
@@ -4,10 +4,10 @@ channels:
   - nodefaults
 dependencies:
   - bowtie2 =2.5.1
-  - bcftools =1.16
+  - bcftools =1.17
   - spades =3.15.5
-  - samtools =1.16.1
+  - samtools =1.17
   - pilon =1.24
   - racon =1.5.0
-  - blast =2.13.0
+  - blast =2.14.0
   - unicycler =0.5.0