diff --git a/glances/Dockerfile b/glances/Dockerfile
index 59f46c2..4992642 100755
--- a/glances/Dockerfile
+++ b/glances/Dockerfile
@@ -23,7 +23,12 @@ RUN \
     \
     && pip3 install --no-cache-dir -r /tmp/requirements.txt \
     \
-    && apk del --purge .build-dependencies
+    && find /usr/local \
+        \( -type d -a -name test -o -name tests -o -name '__pycache__' \) \
+        -o \( -type f -a -name '*.pyc' -o -name '*.pyo' \) \
+        -exec rm -rf '{}' + \
+    \
+    && apk del --purge .build-dependencies \
 
 # Copy root filesystem
 COPY rootfs /