diff --git a/development/contributing.mdx b/development/contributing.mdx
index 4b1c6c0..aad8d26 100644
--- a/development/contributing.mdx
+++ b/development/contributing.mdx
@@ -154,7 +154,7 @@ The easiest way to resolve this is to run Gerbil and have it register in your de
 
 ```bash
 ./gerbil \
---reachableAt=http://gerbil:3003 \
+--reachableAt=http://gerbil:3004 \
 --generateAndSaveKeyTo=/var/config/key \
 --remoteConfig=http://pangolin:3001/api/v1/
 ```
diff --git a/self-host/manual/docker-compose.mdx b/self-host/manual/docker-compose.mdx
index f2d4ad4..5cb68b3 100644
--- a/self-host/manual/docker-compose.mdx
+++ b/self-host/manual/docker-compose.mdx
@@ -160,7 +160,7 @@ services:
       pangolin:
         condition: service_healthy
     command:
-      - --reachableAt=http://gerbil:3003
+      - --reachableAt=http://gerbil:3004
       - --generateAndSaveKeyTo=/var/config/key
       - --remoteConfig=http://pangolin:3001/api/v1/
     volumes:
diff --git a/self-host/manual/manual-install.mdx b/self-host/manual/manual-install.mdx
index 77d78ab..dfcb0b4 100644
--- a/self-host/manual/manual-install.mdx
+++ b/self-host/manual/manual-install.mdx
@@ -141,7 +141,7 @@ services:
       pangolin:
         condition: service_healthy
     command:
-      - --reachableAt=http://gerbil:3003
+      - --reachableAt=http://gerbil:3004
       - --generateAndSaveKeyTo=/var/config/key
       - --remoteConfig=http://pangolin:3001/api/v1/
     volumes: