diff --git a/Dockerfile b/Dockerfile
index b737a9c..f237d0a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:3.19 as builder
-ARG UNBOUND_VERSION=1.19.3
+ARG UNBOUND_VERSION=1.20.0
 
 WORKDIR /build
 RUN apk add curl build-base openssl-dev openssl-libs-static expat-dev expat-static libevent-dev libevent-static protobuf-c-dev protobuf-c-compiler && \