diff --git a/Dockerfile b/Dockerfile
index 5a55dbe..6e9d15b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,18 +1,22 @@
 FROM debian:jessie
 
 ENV TZ=Asia/Tokyo \
-    VERSION=3.6.8
+    VERSION=3.6.9
 
-RUN apt-get update &&\
-    apt-get install -y wget gcc python python-dev &&\
-    wget "http://www.aerospike.com/artifacts/aerospike-amc-community/${VERSION}/aerospike-amc-community-${VERSION}.all.x86_64.deb" &&\
-    dpkg -i aerospike-amc-community-${VERSION}.all.x86_64.deb &&\
-    rm -f aerospike-amc-community-${VERSION}.all.x86_64.deb &&\
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends wget gcc python python-dev && \
+    wget "http://www.aerospike.com/artifacts/aerospike-amc-community/${VERSION}/aerospike-amc-community-${VERSION}.all.x86_64.deb" && \
+    dpkg -i aerospike-amc-community-${VERSION}.all.x86_64.deb && \
+    rm -f aerospike-amc-community-${VERSION}.all.x86_64.deb && \
+    apt-get clean && \
+    rm -rf /var/cache/apt/archives/* /var/lib/apt/lists/* && \
+    dpkg --remove wget && \
     ln -sf /dev/stdout /var/log/amc/aerospike_amc.log
 
-RUN TXT='\ \ \ \ new_sets = []\n    for st in response["sets"]:\n        try:\n            st["set_name"].encode("ascii")\n            new_sets.append(st)\n        except:\n            pass\n    response["sets"] = new_sets' &&\
+# Patch
+RUN TXT='\    new_sets = []\n    for st in response["sets"]:\n        try:\n            st["set_name"].encode("ascii")\n            new_sets.append(st)\n        except:\n            pass\n    response["sets"] = new_sets' && \
     sed -i -e "180i $TXT" /opt/amc/server/flaskapp.py
 
 EXPOSE 8081
 
-CMD /opt/amc/bin/gunicorn --config=/etc/amc/config/gunicorn_config.py flaskapp:app
+CMD /opt/amc/bin/gunicorn --config=/etc/amc/config/gunicorn_config.py flaskapp:app
\ No newline at end of file