diff --git a/2.7/Dockerfile b/2.7/Dockerfile
index f4ecc4e..80c50b6 100644
--- a/2.7/Dockerfile
+++ b/2.7/Dockerfile
@@ -15,11 +15,11 @@ RUN gpg --keyserver pool.sks-keyservers.net --recv-keys \
 
 RUN set -x \
 	&& mkdir -p /usr/src/python \
-	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o "Python-$PYTHON_VERSION.tar.xz" \
-	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o "Python-$PYTHON_VERSION.tar.xz.asc" \
-	&& gpg --verify "Python-$PYTHON_VERSION.tar.xz.asc" \
-	&& tar -xJC /usr/src/python --strip-components=1 -f "Python-$PYTHON_VERSION.tar.xz" \
-	&& rm "Python-$PYTHON_VERSION.tar.xz"* \
+	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o python.tar.xz \
+	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o python.tar.xz.asc \
+	&& gpg --verify python.tar.xz.asc \
+	&& tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \
+	&& rm python.tar.xz* \
 	&& cd /usr/src/python \
 	&& ./configure --enable-shared \
 	&& make -j$(nproc) \
diff --git a/3.3/Dockerfile b/3.3/Dockerfile
index 24c13eb..0f544fd 100644
--- a/3.3/Dockerfile
+++ b/3.3/Dockerfile
@@ -15,11 +15,11 @@ RUN gpg --keyserver pool.sks-keyservers.net --recv-keys \
 
 RUN set -x \
 	&& mkdir -p /usr/src/python \
-	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o "Python-$PYTHON_VERSION.tar.xz" \
-	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o "Python-$PYTHON_VERSION.tar.xz.asc" \
-	&& gpg --verify "Python-$PYTHON_VERSION.tar.xz.asc" \
-	&& tar -xJC /usr/src/python --strip-components=1 -f "Python-$PYTHON_VERSION.tar.xz" \
-	&& rm "Python-$PYTHON_VERSION.tar.xz"* \
+	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o python.tar.xz \
+	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o python.tar.xz.asc \
+	&& gpg --verify python.tar.xz.asc \
+	&& tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \
+	&& rm python.tar.xz* \
 	&& cd /usr/src/python \
 	&& ./configure --enable-shared \
 	&& make -j$(nproc) \
diff --git a/3.4/Dockerfile b/3.4/Dockerfile
index ff6d70d..c24ead9 100644
--- a/3.4/Dockerfile
+++ b/3.4/Dockerfile
@@ -15,11 +15,11 @@ RUN gpg --keyserver pool.sks-keyservers.net --recv-keys \
 
 RUN set -x \
 	&& mkdir -p /usr/src/python \
-	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o "Python-$PYTHON_VERSION.tar.xz" \
-	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o "Python-$PYTHON_VERSION.tar.xz.asc" \
-	&& gpg --verify "Python-$PYTHON_VERSION.tar.xz.asc" \
-	&& tar -xJC /usr/src/python --strip-components=1 -f "Python-$PYTHON_VERSION.tar.xz" \
-	&& rm "Python-$PYTHON_VERSION.tar.xz"* \
+	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz" -o python.tar.xz \
+	&& curl -SL "https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz.asc" -o python.tar.xz.asc \
+	&& gpg --verify python.tar.xz.asc \
+	&& tar -xJC /usr/src/python --strip-components=1 -f python.tar.xz \
+	&& rm python.tar.xz* \
 	&& cd /usr/src/python \
 	&& ./configure --enable-shared \
 	&& make -j$(nproc) \