diff --git a/5.018.004-64bit,threaded/Dockerfile b/5.018.004-64bit,threaded/Dockerfile
index 5ed2a71..b001f12 100644
--- a/5.018.004-64bit,threaded/Dockerfile
+++ b/5.018.004-64bit,threaded/Dockerfile
@@ -22,6 +22,7 @@ WORKDIR /usr/src
 RUN curl -LO https://raw.githubusercontent.com/miyagawa/cpanminus/master/cpanm \
         && chmod +x cpanm \
         && ./cpanm App::cpanminus \
+        && rm -fr /root/.cpanm \
         && rm ./cpanm
 
 WORKDIR /root
diff --git a/5.018.004-64bit/Dockerfile b/5.018.004-64bit/Dockerfile
index efe58b1..d9de441 100644
--- a/5.018.004-64bit/Dockerfile
+++ b/5.018.004-64bit/Dockerfile
@@ -22,6 +22,7 @@ WORKDIR /usr/src
 RUN curl -LO https://raw.githubusercontent.com/miyagawa/cpanminus/master/cpanm \
         && chmod +x cpanm \
         && ./cpanm App::cpanminus \
+        && rm -fr /root/.cpanm \
         && rm ./cpanm
 
 WORKDIR /root
diff --git a/5.020.001-64bit,threaded/Dockerfile b/5.020.001-64bit,threaded/Dockerfile
index 5182d76..3fb7b7a 100644
--- a/5.020.001-64bit,threaded/Dockerfile
+++ b/5.020.001-64bit,threaded/Dockerfile
@@ -22,6 +22,7 @@ WORKDIR /usr/src
 RUN curl -LO https://raw.githubusercontent.com/miyagawa/cpanminus/master/cpanm \
         && chmod +x cpanm \
         && ./cpanm App::cpanminus \
+        && rm -fr /root/.cpanm \
         && rm ./cpanm
 
 WORKDIR /root
diff --git a/5.020.001-64bit/Dockerfile b/5.020.001-64bit/Dockerfile
index e14bfba..8ee6602 100644
--- a/5.020.001-64bit/Dockerfile
+++ b/5.020.001-64bit/Dockerfile
@@ -22,6 +22,7 @@ WORKDIR /usr/src
 RUN curl -LO https://raw.githubusercontent.com/miyagawa/cpanminus/master/cpanm \
         && chmod +x cpanm \
         && ./cpanm App::cpanminus \
+        && rm -fr /root/.cpanm \
         && rm ./cpanm
 
 WORKDIR /root
diff --git a/generate.pl b/generate.pl
index 4079113..4cf8f69 100755
--- a/generate.pl
+++ b/generate.pl
@@ -130,6 +130,7 @@ WORKDIR /usr/src
 RUN curl -LO https://raw.githubusercontent.com/miyagawa/cpanminus/master/cpanm \
         && chmod +x cpanm \
         && ./cpanm App::cpanminus \
+        && rm -fr /root/.cpanm \
         && rm ./cpanm
 
 WORKDIR /root