diff --git a/go.mod b/go.mod
index 7b31880c..237805cd 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/googleapis/gapic-generator-go
 
-go 1.20
+go 1.21
 
 require (
 	cloud.google.com/go/iam v1.1.11
diff --git a/go.sum b/go.sum
index 4f9f3f94..c6002d13 100644
--- a/go.sum
+++ b/go.sum
@@ -29,6 +29,7 @@ gitlab.com/opennota/wd v0.0.0-20180912061657-c5d65f63c638/go.mod h1:EGRJaqe2eO9X
 golang.org/x/net v0.27.0 h1:5K3Njcw06/l2y9vpGCSdcxWOYHOUk3dVNGDXN+FvAys=
 golang.org/x/net v0.27.0/go.mod h1:dDi0PyhWNoiUOrAS8uXv/vnScO4wnHQO4mj9fn/RytE=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
 golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
diff --git a/renovate.json b/renovate.json
index c16499f2..4dc65344 100644
--- a/renovate.json
+++ b/renovate.json
@@ -19,6 +19,10 @@
       "matchPackagePatterns": ["io_bazel_rules_go", "bazel_gazelle"],
       "groupName": "bazel-go"
     }
-  ]
-  
+  ],
+  "force": {
+    "constraints": {
+      "go": "1.21"
+    }
+  }
 }
diff --git a/showcase/go.mod b/showcase/go.mod
index 8b5e5e1f..6e6a3c26 100644
--- a/showcase/go.mod
+++ b/showcase/go.mod
@@ -1,6 +1,6 @@
 module showcase
 
-go 1.20
+go 1.21
 
 require (
 	cloud.google.com/go v0.115.0
diff --git a/showcase/go.sum b/showcase/go.sum
index c3904865..183828a9 100644
--- a/showcase/go.sum
+++ b/showcase/go.sum
@@ -74,6 +74,7 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0=
 go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.49.0 h1:4Pp6oUg3+e/6M4C0A/3kJ2VYa++dsWVTtGgLVj5xtHg=