diff --git a/schema/config.schema.json b/schema/config.schema.json
index 552c93e8..b56aae54 100644
--- a/schema/config.schema.json
+++ b/schema/config.schema.json
@@ -125,7 +125,8 @@
                         "apikey", 
                         "oauthwebapp", 
                         "oauthnativeapp", 
-                        "oauthsinglepageapp"
+                        "oauthsinglepageapp",
+                        "oauth_server_to_server"
                     ]
                 },
                 "jwt": { "$ref": "#/definitions/jwt" },
@@ -138,7 +139,9 @@
             "oneOf": [
                 { "required": ["oauth2"] },
                 { "required": ["jwt"] },
-                { "required": ["api_key"] }
+                { "required": ["api_key"] },
+                { "required": ["oauth_server_to_server"] }
+
             ]
         },
         "service": {
@@ -176,6 +179,26 @@
             },
             "required": [ "client_id", "client_secret", "redirect_uri", "defaultRedirectUri" ]
         },
+        "oauth_server_to_server": {
+            "properties": {
+                "client_id": { "type": "string" },
+                "client_secrets": { "type": "array" },
+                "technical_account_email": {
+                    "type": "string",
+                    "format": "email"
+                },
+                "technical_account_id": {
+                    "type": "string",
+                    "format": "email"
+                },
+                "scopes": {
+                    "type": "array",
+                    "items": { "type": "string" },
+                    "default": []
+                }
+            },
+            "required": [ "client_id", "client_secrets", "technical_account_email", "technical_account_id", "scopes" ]
+        },
         "oauthsinglepageapp": {
             "type": "object",
             "properties": {