diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index cd4d08a..5905ba7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 repos:
   # Using this mirror lets us use mypyc-compiled black, which is about 2x faster
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 23.3.0
+    rev: 24.8.0
     hooks:
       - id: black
         # It is recommended to specify the latest version of Python
diff --git a/bedboss/refgenome_validator/refgenomevalidator.py b/bedboss/refgenome_validator/refgenomevalidator.py
index 5c20e30..4618c6a 100644
--- a/bedboss/refgenome_validator/refgenomevalidator.py
+++ b/bedboss/refgenome_validator/refgenomevalidator.py
@@ -197,10 +197,10 @@ def determine_compatibility(
         final_compatibility_list = []
         for genome_model in self.genome_models:
             # First and Second Layer of Compatibility
-            model_compat_stats[
-                genome_model.genome_alias
-            ] = self.compare_chrom_names_lengths(
-                bed_chrom_info, genome_model.chrom_sizes
+            model_compat_stats[genome_model.genome_alias] = (
+                self.compare_chrom_names_lengths(
+                    bed_chrom_info, genome_model.chrom_sizes
+                )
             )
             # Third Layer is to run IGD but only if layer 1 and layer 2 have passed
             if (