diff --git a/requirements.txt b/requirements.txt
index f25a72b..1e37174 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ scikit-image
 redlistapi
 boto3
 yirgacheffe>=1.12,<2.0
-aoh[validation]>=2.1.0,<3.0
+aoh[validation]>=2.1.1,<3.0
 
 # Snakemake workflow management
 snakemake>=8.0
diff --git a/workflow/rules/aoh.smk b/workflow/rules/aoh.smk
index 3f6cbe1..a636030 100644
--- a/workflow/rules/aoh.smk
+++ b/workflow/rules/aoh.smk
@@ -31,7 +31,10 @@ rule aoh_version_sentinel:
         # Get aoh package version
         try:
             result = subprocess.run(
-                ["aoh-calc", "--version"], capture_output=True, text=True, check=True
+                ["aoh-calc", "--version"],
+                capture_output=True,
+                text=True,
+                check=True,
             )
             aoh_version = result.stdout.strip()
         except Exception: