diff --git a/Common/config/development-linux.json b/Common/config/development-linux.json
index 233af649f..26de849df 100644
--- a/Common/config/development-linux.json
+++ b/Common/config/development-linux.json
@@ -10,7 +10,7 @@
   "services": {
     "CoAuthoring": {
       "server": {
-        "port": 8001,
+        "port": 8000,
         "static_content": {
           "/fonts": {
             "path": "../../fonts"
diff --git a/Common/config/development-mac.json b/Common/config/development-mac.json
index 181734c53..30adaa9c7 100644
--- a/Common/config/development-mac.json
+++ b/Common/config/development-mac.json
@@ -10,7 +10,7 @@
   "services": {
     "CoAuthoring": {
       "server": {
-        "port": 8001,
+        "port": 8000,
         "static_content": {
           "/fonts": {
             "path": "../../fonts"
diff --git a/Common/config/development-windows.json b/Common/config/development-windows.json
index 79cad2d12..4c87b9527 100644
--- a/Common/config/development-windows.json
+++ b/Common/config/development-windows.json
@@ -10,7 +10,7 @@
   "services": {
     "CoAuthoring": {
       "server": {
-        "port": 8001,
+        "port": 8000,
         "static_content": {
           "/fonts": {
             "path": "../../fonts"