diff --git a/go.mod b/go.mod
index 7bfcbd6..74f5f9a 100644
--- a/go.mod
+++ b/go.mod
@@ -3,14 +3,17 @@ module github.com/nezuchan/scheduled-tasks
 go 1.20
 
 require (
-	github.com/caarlos0/env/v8 v8.0.0
+	github.com/caarlos0/env/v9 v9.0.0
 	github.com/disgoorg/log v1.2.1
 	github.com/joho/godotenv v1.5.1
 	github.com/rabbitmq/amqp091-go v1.8.1
 	github.com/redis/go-redis/v9 v9.0.5
 )
 
-require github.com/go-co-op/gocron v1.31.0
+require (
+	github.com/caarlos0/env/v8 v8.0.0
+	github.com/go-co-op/gocron v1.31.0
+)
 
 require (
 	github.com/robfig/cron/v3 v3.0.1 // indirect
diff --git a/go.sum b/go.sum
index 2681326..df81f11 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,7 @@ github.com/bsm/ginkgo/v2 v2.7.0 h1:ItPMPH90RbmZJt5GtkcNvIRuGEdwlBItdNVoyzaNQao=
 github.com/bsm/gomega v1.26.0 h1:LhQm+AFcgV2M0WyKroMASzAzCAJVpAxQXv4SaI9a69Y=
 github.com/caarlos0/env/v8 v8.0.0 h1:POhxHhSpuxrLMIdvTGARuZqR4Jjm8AYmoi/JKlcScs0=
 github.com/caarlos0/env/v8 v8.0.0/go.mod h1:7K4wMY9bH0esiXSSHlfHLX5xKGQMnkH5Fk4TDSSSzfo=
+github.com/caarlos0/env/v9 v9.0.0/go.mod h1:ye5mlCVMYh6tZ+vCgrs/B95sj88cg5Tlnc0XIzgZ020=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=