diff --git a/mastodon/Dockerfile.master b/mastodon/Dockerfile.master
index 982db78..a167a98 100644
--- a/mastodon/Dockerfile.master
+++ b/mastodon/Dockerfile.master
@@ -75,7 +75,7 @@ RUN apk -U upgrade \
 # Clean
  && npm -g cache clean && yarn cache clean \
  && apk del build-dependencies \
- && rm -rf /var/cache/apk/*
+ && rm -rf /var/cache/apk/* /tmp/src
 
 COPY rootfs /
 
diff --git a/mastodon/Dockerfile.stable b/mastodon/Dockerfile.stable
index 83d9bf9..bcea6bc 100644
--- a/mastodon/Dockerfile.stable
+++ b/mastodon/Dockerfile.stable
@@ -75,7 +75,7 @@ RUN apk -U upgrade \
 # Clean
  && npm -g cache clean && yarn cache clean \
  && apk del build-dependencies \
- && rm -rf /var/cache/apk/*
+ && rm -rf /var/cache/apk/* /tmp/src
 
 COPY rootfs /
 
diff --git a/mastodon/Dockerfile.targaryen b/mastodon/Dockerfile.targaryen
index c8b316c..70f1c50 100644
--- a/mastodon/Dockerfile.targaryen
+++ b/mastodon/Dockerfile.targaryen
@@ -79,7 +79,7 @@ RUN apk -U upgrade \
 # Clean
  && npm -g cache clean && yarn cache clean \
  && apk del build-dependencies \
- && rm -rf /var/cache/apk/*
+ && rm -rf /var/cache/apk/* /tmp/src
 
 COPY rootfs /