diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 60a82315..b2c6ea5e 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -31,7 +31,6 @@ RUN set -ex; \
         imagemagick-dev \
         libevent-dev \
         libjpeg-turbo-dev \
-        libmcrypt-dev \
         libmemcached-dev \
         libpng-dev \
         libwebp-dev \
diff --git a/Dockerfile-debian.template b/Dockerfile-debian.template
index cbbc7a0e..5c935d87 100644
--- a/Dockerfile-debian.template
+++ b/Dockerfile-debian.template
@@ -35,7 +35,6 @@ RUN set -ex; \
         libjpeg-dev \
         libldap2-dev \
         libmagickwand-dev \
-        libmcrypt-dev \
         libmemcached-dev \
         libpng-dev \
         libpq-dev \