diff --git a/go.mod b/go.mod
index a8141a679..b426ce8e1 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/google/trillian-examples
 
-go 1.19
+go 1.20
 
 require (
 	github.com/apache/beam/sdks/v2 v2.49.0
diff --git a/serverless/deploy/github/distributor/combine_witness_signatures/go.mod b/serverless/deploy/github/distributor/combine_witness_signatures/go.mod
index cec71f602..5ac41d39b 100644
--- a/serverless/deploy/github/distributor/combine_witness_signatures/go.mod
+++ b/serverless/deploy/github/distributor/combine_witness_signatures/go.mod
@@ -1,6 +1,6 @@
 module github.com/google/trillian-examples/serverless/deploy/github/distributor/combine_witness_signatures
 
-go 1.19
+go 1.20
 
 require (
 	github.com/golang/glog v1.1.2
diff --git a/serverless/deploy/github/distributor/update_logs_index/go.mod b/serverless/deploy/github/distributor/update_logs_index/go.mod
index 7d8b1dbea..3dc96ee9e 100644
--- a/serverless/deploy/github/distributor/update_logs_index/go.mod
+++ b/serverless/deploy/github/distributor/update_logs_index/go.mod
@@ -1,6 +1,6 @@
 module github.com/google/trillian-examples/serverless/deploy/github/distributor/update_logs_index
 
-go 1.19
+go 1.20
 
 require (
 	github.com/golang/glog v1.1.2
diff --git a/serverless/experimental/gcp-log/gcs_uploader/go.mod b/serverless/experimental/gcp-log/gcs_uploader/go.mod
index e56c36337..7a46fd25e 100644
--- a/serverless/experimental/gcp-log/gcs_uploader/go.mod
+++ b/serverless/experimental/gcp-log/gcs_uploader/go.mod
@@ -1,6 +1,6 @@
 module github.com/gcp_serverless_example_module
 
-go 1.19
+go 1.20
 
 require cloud.google.com/go/storage v1.32.0