diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index bc6627c..ae9e0a6 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        go: [1.18, 1.19, "1.20", 1.21, 1.22, 1.23]
+        go: ["1.20", 1.21, 1.22, 1.23]
         include:
           - os: ubuntu-latest
             go-build: ~/.cache/go-build
diff --git a/go.mod b/go.mod
index e3171d9..6f38085 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/golang-queue/queue
 
-go 1.18
+go 1.20
 
 require (
 	github.com/appleboy/com v0.1.7