diff --git a/bio/blast/blastn/environment.yaml b/bio/blast/blastn/environment.yaml
index 73723ee9c9..c6e93791e7 100644
--- a/bio/blast/blastn/environment.yaml
+++ b/bio/blast/blastn/environment.yaml
@@ -3,4 +3,4 @@ channels:
   - bioconda
   - nodefaults
 dependencies:
-  - blast ==2.11
+  - blast =2.13.0