diff --git a/Dockerfile b/Dockerfile
index e76bda8..363d995 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-FROM appcelerator/alpine:3.7.0
+FROM appcelerator/alpine:3.7.1
 
 RUN apk --no-cache add bind-tools tini@community
-ARG ETCD_VERSION=3.3.1
+ARG ETCD_VERSION=3.3.3
 RUN curl -L https://github.com/coreos/etcd/releases/download/v${ETCD_VERSION}/etcd-v${ETCD_VERSION}-linux-amd64.tar.gz -o etcd.tar.gz && \
     tar xzf etcd.tar.gz && \
     mv etcd-*/etcd /etcd-*/etcdctl /bin/ && \
diff --git a/README.md b/README.md
index 6f0eead..98f9d9a 100644
--- a/README.md
+++ b/README.md
@@ -65,5 +65,5 @@ give it time to stabilize, and remove the temporary members:
 
 - 3.0, 3.0.15
 - 3.1, 3.1.11
-- 3.2, 3.2.16
-- 3.3, 3.3.1, latest
+- 3.2, 3.2.18
+- 3.3, 3.3.3, latest