diff --git a/.drone.yml b/.drone.yml
index dc420b5..3807f5e 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -4,18 +4,18 @@ name: production
 
 steps:
   - name: Modify-Amazon-Links
-    image: cibuilds/hugo:0.62.1
+    image: alpine:3.9
     commands:
       - grep -l -r ecx.images-amazon.com content/ | sort | uniq | xargs -t --no-run-if-empty sed -ie "s/http:\/\/ecx.images-amazon.com/https:\/\/images-na.ssl-images-amazon.com/g"
       - grep -l -r "http://www.amazon.co.jp/exec" content/ | sort | uniq | xargs -t --no-run-if-empty sed -i -e "s/http:\/\/www.amazon.co.jp\/exec/https:\/\/www.amazon.co.jp\/exec/g"
 
   - name: hugo
-    image: cibuilds/hugo:0.62.1
+    image: cibuilds/hugo:0.64.1
     commands:
-      - hugo -e production -v -s .
+      - sudo hugo -e production -v -s .
 
   - name: Compress-the-Assets
-    image: cibuilds/hugo:0.62.1
+    image: alpine:3.9
     commands:
       - for TARGET in `find public/ -type f | egrep "\.(css|js|png|jpg|JPG|PNG|CSS|JS)$"`; do gzip -c ${TARGET} > ${TARGET}.gz; done
       - for TARGET in `find public/ -type f | egrep "\.(css|js|png|jpg|JPG|PNG|CSS|JS)$"`; do rm -f ${TARGET}; done
@@ -58,18 +58,18 @@ name: staging
 
 steps:
   - name: Modify-Amazon-Links
-    image: cibuilds/hugo:0.62.1
+    image: alpine:3.9
     commands:
       - grep -l -r ecx.images-amazon.com content/ | sort | uniq | xargs -t --no-run-if-empty sed -ie "s/http:\/\/ecx.images-amazon.com/https:\/\/images-na.ssl-images-amazon.com/g"
       - grep -l -r "http://www.amazon.co.jp/exec" content/ | sort | uniq | xargs -t --no-run-if-empty sed -i -e "s/http:\/\/www.amazon.co.jp\/exec/https:\/\/www.amazon.co.jp\/exec/g"
 
   - name: hugo
-    image: cibuilds/hugo:0.62.1
+    image: cibuilds/hugo:0.64.1
     commands:
-      - hugo -e staging -v -s .
+      - sudo hugo -e staging -v -s .
 
   - name: Compress-the-Assets
-    image: cibuilds/hugo:0.62.1
+    image: alpine:3.9
     commands:
       - for TARGET in `find public/ -type f | egrep "\.(css|js|png|jpg|JPG|PNG|CSS|JS)$"`; do gzip -c ${TARGET} > ${TARGET}.gz; done
       - for TARGET in `find public/ -type f | egrep "\.(css|js|png|jpg|JPG|PNG|CSS|JS)$"`; do rm -f ${TARGET}; done