diff --git a/Dockerfile b/Dockerfile
index 7875be01..6a42ddcb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,10 @@
-FROM alpine:3.7 as prep
+FROM alpine:3.9 as prep
 
 LABEL maintainer="Tomohisa Kusano <siomiz@gmail.com>" \
       contributors="See CONTRIBUTORS file <https://github.com/siomiz/SoftEtherVPN/blob/master/CONTRIBUTORS>"
 
-ENV BUILD_VERSION=4.28-9669-beta \
-    SHA256_SUM=fbf6e04c4451d0cb1555c3a53c178b5453c7d761119f82fd693538c9f115fecb
+ENV BUILD_VERSION=4.29-9680-rtm \
+    SHA256_SUM=c19cd49835c613cb5551ce66c91f90da3d3496ab3e15e8c61e22b464dc55d9b0
 
 RUN wget https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/archive/v${BUILD_VERSION}.tar.gz \
     && echo "${SHA256_SUM}  v${BUILD_VERSION}.tar.gz" | sha256sum -c \
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index d677b616..c3212dba 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -1,10 +1,10 @@
-FROM alpine:3.7 as prep
+FROM alpine:3.9 as prep
 
 LABEL maintainer="Tomohisa Kusano <siomiz@gmail.com>" \
       contributors="See CONTRIBUTORS file <https://github.com/siomiz/SoftEtherVPN/blob/master/CONTRIBUTORS>"
 
-ENV BUILD_VERSION=4.28-9669-beta \
-    SHA256_SUM=fbf6e04c4451d0cb1555c3a53c178b5453c7d761119f82fd693538c9f115fecb
+ENV BUILD_VERSION=4.29-9680-rtm \
+    SHA256_SUM=c19cd49835c613cb5551ce66c91f90da3d3496ab3e15e8c61e22b464dc55d9b0
 
 RUN wget https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/archive/v${BUILD_VERSION}.tar.gz \
     && echo "${SHA256_SUM}  v${BUILD_VERSION}.tar.gz" | sha256sum -c \
@@ -12,13 +12,13 @@ RUN wget https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/archive/v${BUILD_VE
     && tar -x -C /usr/local/src/ -f v${BUILD_VERSION}.tar.gz \
     && rm v${BUILD_VERSION}.tar.gz
 
-FROM alpine:3.7 as build
+FROM alpine:3.9 as build
 
 COPY --from=prep /usr/local/src /usr/local/src
 
 ENV LANG=en_US.UTF-8
 
-RUN apk add -U build-base ncurses-dev openssl-dev readline-dev zip \
+RUN apk add -U build-base ncurses-dev openssl-dev readline-dev zip zlib-dev \
     && cd /usr/local/src/SoftEtherVPN_Stable-* \
     && ./configure \
     && make \
@@ -26,7 +26,7 @@ RUN apk add -U build-base ncurses-dev openssl-dev readline-dev zip \
     && touch /usr/vpnserver/vpn_server.config \
     && zip -r9 /artifacts.zip /usr/vpn* /usr/bin/vpn*
 
-FROM alpine:3.7
+FROM alpine:3.9
 
 COPY --from=build /artifacts.zip /
 
diff --git a/Dockerfile.debian b/Dockerfile.debian
index 6e2ca002..7f584cae 100644
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -1,10 +1,10 @@
-FROM alpine:3.7 as prep
+FROM alpine:3.9 as prep
 
 LABEL maintainer="Tomohisa Kusano <siomiz@gmail.com>" \
       contributors="See CONTRIBUTORS file <https://github.com/siomiz/SoftEtherVPN/blob/master/CONTRIBUTORS>"
 
-ENV BUILD_VERSION=4.28-9669-beta \
-    SHA256_SUM=fbf6e04c4451d0cb1555c3a53c178b5453c7d761119f82fd693538c9f115fecb
+ENV BUILD_VERSION=4.29-9680-rtm \
+    SHA256_SUM=c19cd49835c613cb5551ce66c91f90da3d3496ab3e15e8c61e22b464dc55d9b0
 
 RUN wget https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/archive/v${BUILD_VERSION}.tar.gz \
     && echo "${SHA256_SUM}  v${BUILD_VERSION}.tar.gz" | sha256sum -c \
diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index 1f725c5d..3d5f7ab6 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -3,8 +3,8 @@ FROM alpine:3.7 as prep
 LABEL maintainer="Tomohisa Kusano <siomiz@gmail.com>" \
       contributors="See CONTRIBUTORS file <https://github.com/siomiz/SoftEtherVPN/blob/master/CONTRIBUTORS>"
 
-ENV BUILD_VERSION=4.28-9669-beta \
-    SHA256_SUM=fbf6e04c4451d0cb1555c3a53c178b5453c7d761119f82fd693538c9f115fecb
+ENV BUILD_VERSION=4.29-9680-rtm \
+    SHA256_SUM=c19cd49835c613cb5551ce66c91f90da3d3496ab3e15e8c61e22b464dc55d9b0
 
 RUN wget https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/archive/v${BUILD_VERSION}.tar.gz \
     && echo "${SHA256_SUM}  v${BUILD_VERSION}.tar.gz" | sha256sum -c \
diff --git a/README.md b/README.md
index e7219b8a..249a8c77 100644
--- a/README.md
+++ b/README.md
@@ -5,12 +5,12 @@
 <sup>*</sup> "Simple" as in no configuration parameter is needed for a single-user SecureNAT setup.
 
 ## Image Tags
-Base OS Image | Latest Stable ([v4.28-9669-beta](https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/tree/v4.28-9669-beta)) | [v4.25-9656-rtm](https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/tree/v4.25-9656-rtm)
+Base OS Image | Latest Stable ([v4.29-9680-rtm](https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/tree/v4.29-9680-rtm)) | [v4.25-9656-rtm](https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/tree/v4.25-9656-rtm)
 ------------- | -- | --
-`centos:7` | **`:latest`**, `:centos`, `:9669`, `:4.28`, `:9669-centos`, `:4.28-centos` | `:9656`, `:4.25`, `:9656-centos`, `4.25-centos`
-`debian:9-slim` | `:debian`, `:9669-debian`, `:4.28-debian` | `:9656-debian`, `:4.25-debian`
-`alpine:3.7` | `:alpine`, `:9669-alpine`, `:4.28-alpine` | `:9656-alpine`, `:4.25-alpine`
-`ubuntu:18.04` | `:ubuntu`, `:9669-ubuntu`, `:4.28-ubuntu` | -
+`centos:7` | **`:latest`**, `:centos`, `:9680`, `:4.29`, `:9680-centos`, `:4.29-centos` | `:9656`, `:4.25`, `:9656-centos`, `4.25-centos`
+`debian:9-slim` | `:debian`, `:9680-debian`, `:4.29-debian` | `:9656-debian`, `:4.25-debian`
+`alpine:3.9` | `:alpine`, `:9680-alpine`, `:4.29-alpine` | `:9656-alpine`, `:4.25-alpine`
+`ubuntu:18.04` | `:ubuntu`, `:9680-ubuntu`, `:4.29-ubuntu` | -
 
 ## Setup
  - L2TP/IPSec PSK + OpenVPN