diff --git a/Dockerfile b/Dockerfile
index e915b32..f407d09 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -58,9 +58,9 @@ FROM build-base AS unbound
 
 WORKDIR /src
 
-ARG UNBOUND_VERSION=1.19.2
+ARG UNBOUND_VERSION=1.19.3
 # https://nlnetlabs.nl/downloads/unbound/unbound-1.19.2.tar.gz.sha256
-ARG UNBOUND_SHA256="cc560d345734226c1b39e71a769797e7fdde2265cbb77ebce542704bba489e55"
+ARG UNBOUND_SHA256="3ae322be7dc2f831603e4b0391435533ad5861c2322e34a76006a9fb65eb56b9"
 
 ADD https://nlnetlabs.nl/downloads/unbound/unbound-${UNBOUND_VERSION}.tar.gz unbound.tar.gz