diff --git a/Dockerfile b/Dockerfile
index 39f0376..6197f7a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 RUN apt-get update && apt-get install -y autoconf automake curl cmake git libtool make \
     && git clone --depth=1 https://github.com/tsl0922/ttyd.git /ttyd \
-    && cd /ttyd && env BUILD_TARGET=x86_64 WITH_SSL=true ./scripts/cross-build.sh
+    && cd /ttyd && env BUILD_TARGET=x86_64 ./scripts/cross-build.sh
 
 FROM ubuntu:18.04
 COPY --from=0 /ttyd/build/ttyd /usr/bin/ttyd
diff --git a/Dockerfile-alpine b/Dockerfile-alpine
index 53266bb..9c31af0 100644
--- a/Dockerfile-alpine
+++ b/Dockerfile-alpine
@@ -1,9 +1,9 @@
 FROM ubuntu:18.04
 RUN apt-get update && apt-get install -y autoconf automake curl cmake git libtool make \
     && git clone --depth=1 https://github.com/tsl0922/ttyd.git /ttyd \
-    && cd /ttyd && env BUILD_TARGET=x86_64 WITH_SSL=true ./scripts/cross-build.sh
+    && cd /ttyd && env BUILD_TARGET=x86_64 ./scripts/cross-build.sh
 
-FROM alpine:3.12
+FROM alpine
 COPY --from=0 /ttyd/build/ttyd /usr/bin/ttyd
 RUN apk add --no-cache bash tini