diff --git a/requirements.txt b/requirements.txt
index fe5e543..896fa76 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ certifi==2026.1.4
 charset-normalizer==3.4.4
 click==8.3.1
 idna==3.11
-oauthlib==3.3.1
+oauthlib==4.0.0
 openttd-helpers==2.0.0
 requests==2.32.5
 requests-oauthlib==2.0.0