diff --git a/Dockerfile b/Dockerfile
index cd21064..0c4d783 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:3.15.5
 
-ARG UNBOUND_VERSION=1.19.0
+ARG UNBOUND_VERSION=1.20.0
 
 # Install dependencies and build unbound, clean up after
 RUN apk --update add --no-cache alpine-sdk bison dns-root-hints expat-dev flex git openssl-dev && \