diff --git a/Dockerfile b/Dockerfile
index bd1520e..4b02413 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.11-alpine3.19 AS builder
+FROM golang:1.21.13-alpine3.19 AS builder
 COPY . /workspace
 WORKDIR /workspace
 ENV CGO_ENABLED=0
diff --git a/go.mod b/go.mod
index a58000a..fafd76a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,6 @@
 module github.com/protomaps/go-pmtiles
 
-go 1.21.0
-
-toolchain go1.21.5
+go 1.21.13
 
 require (
 	github.com/RoaringBitmap/roaring v1.5.0