diff --git a/Dockerfile b/Dockerfile
index 2d6acf4..932fc00 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,8 +12,8 @@ RUN set -x && \
         ldnsutils \
         --no-install-recommends
 
-ENV LIBRESSL_VERSION 2.3.3
-ENV LIBRESSL_SHA256 76733166187cc8587e0ebe1e83965ef257262a1a676a36806edd3b6d51b50aa9
+ENV LIBRESSL_VERSION 2.3.4
+ENV LIBRESSL_SHA256 7a1135b2620f78928e89538c211a4df1d9415994001d1e7c9178c6b6d72de6a9
 ENV LIBRESSL_DOWNLOAD_URL http://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-${LIBRESSL_VERSION}.tar.gz
 
 RUN set -x && \