diff --git a/CHANGELOG.md b/CHANGELOG.md
index a87f51ace..1c5d2554b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 Note: For changes to the API, see https://shopify.dev/changelog?filter=api
 ## Unreleased
+- [#1395](https://github.com/Shopify/shopify-api-ruby/pull/1395) use correct internal admin host for 1P app development
 
 ## 14.11.0
 - [#1386](https://github.com/Shopify/shopify-api-ruby/pull/1386) Add support for 2025-07 API version
diff --git a/lib/shopify_api/auth/oauth.rb b/lib/shopify_api/auth/oauth.rb
index 807b563ee..eedd19aa4 100644
--- a/lib/shopify_api/auth/oauth.rb
+++ b/lib/shopify_api/auth/oauth.rb
@@ -114,7 +114,8 @@ def auth_base_uri(shop)
           return "https://#{shop}/admin" unless defined?(DevServer) && shop.include?(".my.shop.dev")
 
           # For first-party apps in development only, we leverage DevServer to build the admin base URI
-          admin_web = T.unsafe(Object.const_get("DevServer")).new("web") # rubocop:disable Sorbet/ConstantsFromStrings
+          admin_web = T.unsafe(Object.const_get("DevServer")) # rubocop:disable Sorbet/ConstantsFromStrings
+            .new("admin-web")
           admin_host = admin_web.host!(nonstandard_host_prefix: "admin")
           shop_name = shop.split(".").first