diff --git a/docker/Dockerfile.linux.amd64 b/docker/Dockerfile.linux.amd64
index 94bef95..f43da81 100644
--- a/docker/Dockerfile.linux.amd64
+++ b/docker/Dockerfile.linux.amd64
@@ -5,7 +5,7 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
   org.label-schema.vendor="Bo-Yi Wu" \
   org.label-schema.schema-version="1.0"
 
-ENV PACKER_VERSION 1.7.4
+ENV PACKER_VERSION 1.8.6
 ENV PACKER_ARCH amd64
 RUN wget -q https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_linux_${PACKER_ARCH}.zip -O packer.zip && \
   unzip packer.zip -d /bin && \
diff --git a/docker/Dockerfile.linux.arm b/docker/Dockerfile.linux.arm
index 1e82be5..d3be4fc 100644
--- a/docker/Dockerfile.linux.arm
+++ b/docker/Dockerfile.linux.arm
@@ -5,7 +5,7 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
   org.label-schema.vendor="Bo-Yi Wu" \
   org.label-schema.schema-version="1.0"
 
-ENV PACKER_VERSION 1.7.4
+ENV PACKER_VERSION 1.8.6
 ENV PACKER_ARCH arm
 RUN wget -q https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_linux_${PACKER_ARCH}.zip -O packer.zip && \
   unzip packer.zip -d /bin && \
diff --git a/docker/Dockerfile.linux.arm64 b/docker/Dockerfile.linux.arm64
index 4f518fd..2c9401a 100644
--- a/docker/Dockerfile.linux.arm64
+++ b/docker/Dockerfile.linux.arm64
@@ -5,7 +5,7 @@ LABEL maintainer="Bo-Yi Wu <appleboy.tw@gmail.com>" \
   org.label-schema.vendor="Bo-Yi Wu" \
   org.label-schema.schema-version="1.0"
 
-ENV PACKER_VERSION 1.7.4
+ENV PACKER_VERSION 1.8.6
 ENV PACKER_ARCH arm64
 RUN wget -q https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_linux_${PACKER_ARCH}.zip -O packer.zip && \
   unzip packer.zip -d /bin && \