diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 717335f..164ec97 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 env:
-  CARBON_VERSION: "1.27.0"
+  CARBON_VERSION: "1.28.0"
 
 jobs:
   linux:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index e79e158..2cba575 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ on:
       - main
   pull_request:
 env:
-  CARBON_VERSION: "1.27.0"
+  CARBON_VERSION: "1.28.0"
 jobs:
   golangci:
     name: lint
diff --git a/ci/azure-pipelines.yml b/ci/azure-pipelines.yml
index 63bac23..011f518 100644
--- a/ci/azure-pipelines.yml
+++ b/ci/azure-pipelines.yml
@@ -4,7 +4,7 @@ trigger:
 pool:
   vmImage: ubuntu-latest
 variables:
-  CARBON_VERSION: '1.27.0'
+  CARBON_VERSION: '1.28.0'
 
 steps:
 - task: GoTool@0