all: update Go runtime to version 1.21

2 files changed, 2 insertions, 2 deletions

diff --git a/app.yaml b/app.yaml
index 63bf198..8d8d146 100644
--- a/app.yaml
+++ b/app.yaml
@@ -1,5 +1,5 @@
 service: default
-runtime: go118
+runtime: go121
 
 env_variables:
   TOUR_ANALYTICS: |
diff --git a/go.mod b/go.mod
index c3eacb9..8c143cc 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/golang-id/tour
 
-go 1.18
+go 1.21
 
 require (
 	golang.org/x/tools v0.6.0