diff --git a/requirements-dev.txt b/requirements-dev.txt
index ba40938..0767207 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -28,7 +28,7 @@ pydoc-markdown == 4.8.2
 pytest == 7.4.3
 pytest-cov == 4.1.0
 pytest-forked == 1.6.0
-pytest-icdiff == 0.8
+pytest-icdiff == 0.9
 pytest-random-order == 1.1.0
 pytest-socket == 0.6.0
 pytest-sugar == 0.9.7