diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6c456b60..e7dbf6c0 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,7 +12,7 @@ pytest-timeout>=2.4.0
 hypothesis>=6.0.0
 vcrpy>=6.0.0
 requests-mock>=1.12.1
-diff-cover>=10.3.0
+diff-cover>=10.4.1
 
 # Type stubs
 types-requests>=2.33.0.20260518