diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5109f0d..39622e4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,7 +14,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v4
       with:
-        go-version: '1.18'
+        go-version: '1.21'
     - name: goimports
       run: go get golang.org/x/tools/cmd/goimports && goimports -d . | (! grep .)
     # Workaround for missing checksums caused by https://github.com/golang/go/issues/44129
@@ -40,7 +40,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v4
       with:
-        go-version: '1.18'
+        go-version: '1.21'
     - name: Set up Docker Buildx
       id: buildx
       uses: docker/setup-buildx-action@v1
diff --git a/.golangci.yml b/.golangci.yml
index 24f0b40..6b93e61 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -78,10 +78,10 @@ linters-settings:
       - name: waitgroup-by-value
 
   staticcheck:
-    go: "1.18"
+    go: "1.21"
 
   unused:
-    go: "1.18"
+    go: "1.21"
 
 output:
   sort-results: true
diff --git a/Dockerfile b/Dockerfile
index 13ec6c9..9226ad2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.18-alpine as builder
+FROM golang:1.21-alpine as builder
 RUN apk add --update make
 ADD ./ /src
 WORKDIR /src
diff --git a/go.mod b/go.mod
index 0d9bb7b..108499d 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/packethost/cacher
 
-go 1.18
+go 1.21
 
 require (
 	github.com/equinix-labs/otel-init-go v0.0.9