diff --git a/requirements_dev.txt b/requirements_dev.txt
index 107bece69..67f9ceb2c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@
 # PlexAPI requirements to run py.test.
 # pip install -r requirements_dev.txt
 #---------------------------------------------------------
-coveralls==3.3.1
+coveralls==4.0.0
 flake8==7.0.0
 pillow==10.3.0
 pytest==8.1.1