diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 98111e18..db6ad481 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,6 @@ jobs:
 
     runs-on: ubuntu-latest
     strategy:
-      max-parallel: 4
       matrix:
         python-version: [2.7, 3.5, 3.6, 3.7, 3.8]
 
@@ -85,6 +84,11 @@ jobs:
         test $success = 1
         rm -rf $output
 
+    - name: Download and extract
+      run: |
+        gdown https://github.com/wkentaro/gdown/archive/refs/tags/v4.0.0.tar.gz -O - --quiet | tar zxf -
+        test -d gdown-4.0.0
+
     - name: Install from dist
       run: |
         rm -f dist/*.tar.gz
diff --git a/README.md b/README.md
index e8a606ae..2e8c1c85 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,9 @@ $ gdown --fuzzy 'https://drive.google.com/file/d/0B9P1L--7Wd2vU3VUVlFnbTgtS2c/vi
 $ cat spam.txt
 spam
 
+$ # it can handle urls created from [Share] -> [Copy Url] on Google Drive
+$ gdown 'https://drive.google.com/a/jsk.imi.i.u-tokyo.ac.jp/uc?id=0B_NiLAzvehC9R2stRmQyM3ZiVjQ'
+
 $ # as an alternative to curl/wget
 $ gdown https://httpbin.org/ip -O ip.json
 $ cat ip.json
@@ -70,11 +73,8 @@ $ cat ip.json
 }
 
 $ # write stdout and pipe to extract
-$ gdown https://drive.google.com/uc?id=0B9P1L--7Wd2vNm9zMTJWOGxobkU -O - --quiet | tar zxvf -
-$ ls 20150428_collected_images/
-
-$ # it can handle urls created from [Share] -> [Copy Url] on Google Drive
-$ gdown 'https://drive.google.com/a/jsk.imi.i.u-tokyo.ac.jp/uc?id=0B_NiLAzvehC9R2stRmQyM3ZiVjQ'
+$ gdown https://github.com/wkentaro/gdown/archive/refs/tags/v4.0.0.tar.gz -O - --quiet | tar zxvf -
+$ ls gdown-4.0.0
 ```
 
 ### From Python