diff --git a/custom_components/gardena_smart_system/manifest.json b/custom_components/gardena_smart_system/manifest.json
index aa109d4..4d8d16d 100644
--- a/custom_components/gardena_smart_system/manifest.json
+++ b/custom_components/gardena_smart_system/manifest.json
@@ -7,5 +7,5 @@
   "issue_tracker": "https://github.com/py-smart-gardena/hass-gardena-smart-system/issues",
   "dependencies": [],
   "codeowners": ["@py-smart-gardena"],
-  "requirements": ["py-smart-gardena==1.3.9"]
+  "requirements": ["py-smart-gardena==1.3.9", "oauthlib==3.2.2"]
 }