diff --git a/dev_requirements.txt b/dev_requirements.txt
index aa1b519..3dba72a 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -4,7 +4,7 @@ google-auth-httplib2
 google-auth-oauthlib
 APScheduler
 cryptography>=50.0.1
-prometheus_client>=0.25.0
+prometheus_client>=0.26.0
 defusedxml>=0.7.1
 twine
 build