diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
index 13e67c6fe..d4bb0bf59 100644
--- a/.github/workflows/backend.yml
+++ b/.github/workflows/backend.yml
@@ -355,7 +355,7 @@ jobs:
     with:
       backend: ${{ matrix.backend }}
       build-type: ${{ matrix.build-type }}
-      go-version: "1.25.x"
+      go-version: "1.27.x"
       tag-suffix: ${{ matrix.tag-suffix }}
       lang: ${{ matrix.lang || 'python' }}
       use-pip: ${{ matrix.backend == 'diffusers' }}
diff --git a/.github/workflows/backend_build_darwin.yml b/.github/workflows/backend_build_darwin.yml
index 6b8b2a89b..19952a5ef 100644
--- a/.github/workflows/backend_build_darwin.yml
+++ b/.github/workflows/backend_build_darwin.yml
@@ -22,7 +22,8 @@ on:
         type: string
       go-version:
         description: 'Go version to use'
-        default: '1.24.x'
+        # Go 1.27 stamps pure-Go hosts with SDK metadata that supports modern Metal APIs.
+        default: '1.27.x'
         type: string
       tag-suffix:
         description: 'Tag suffix for the built image'
diff --git a/.github/workflows/backend_pr.yml b/.github/workflows/backend_pr.yml
index c13c444c4..2626f87e8 100644
--- a/.github/workflows/backend_pr.yml
+++ b/.github/workflows/backend_pr.yml
@@ -281,7 +281,7 @@ jobs:
     with:
       backend: ${{ matrix.backend }}
       build-type: ${{ matrix.build-type }}
-      go-version: "1.25.x"
+      go-version: "1.27.x"
       tag-suffix: ${{ matrix.tag-suffix }}
       lang: ${{ matrix.lang || 'python' }}
       use-pip: ${{ matrix.backend == 'diffusers' }}
diff --git a/docs/content/getting-started/build.md b/docs/content/getting-started/build.md
index 77884a412..42e64928d 100644
--- a/docs/content/getting-started/build.md
+++ b/docs/content/getting-started/build.md
@@ -30,6 +30,10 @@ To install the dependencies follow the instructions below:
 {{< tabs >}}
 {{% tab title="Apple" %}}
 
+To build pure-Go backend hosts that load Metal libraries, use Go 1.27 or later on macOS 13 or later.
+Go 1.27 records macOS SDK 26.2 in internally linked executables, which enables modern Metal APIs in these hosts.
+Rebuild the affected backend after upgrading Go. Rebuilding only `local-ai` does not update installed backend executables.
+
 Install `xcode` from the App Store
 
 ```bash