diff --git a/internal/config/test_data/test_config.yaml b/internal/config/test_data/test_config.yaml
index 93e50e415..a96b86dff 100644
--- a/internal/config/test_data/test_config.yaml
+++ b/internal/config/test_data/test_config.yaml
@@ -2,8 +2,12 @@ serve:
   api:
     port: 4468
     verbose_errors: true
+    trusted_proxies:
+      - 0.0.0.0/0
   proxy:
     port: 4469
+    trusted_proxies:
+      - 0.0.0.0/0
 
 log:
   level: debug
diff --git a/schema/config.schema.json b/schema/config.schema.json
index ca2687ad8..11fc7dc03 100644
--- a/schema/config.schema.json
+++ b/schema/config.schema.json
@@ -184,6 +184,13 @@
         },
         "tls": {
           "$ref": "#/definitions/tlsConfig"
+        },
+        "trusted_proxies": {
+          "description": "The list IPs or CIDRs heimdall should trust and thus make use of headers, like X-Forwarded-*, Forwarded, etc",
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
         }
       }
     },