diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index aef4e42..068122f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,6 +15,7 @@ jobs:
         volume:
           - /tmp
           - .
+          - relative-path
           - /
         asroot:
           - name: ''
@@ -30,6 +31,9 @@ jobs:
       - run: sudo apt-get install -y libparted-dev libudev-dev
       - run: make all extra
 
+      - if: matrix.volume == 'relative-path'
+        run: mkdir relative-path
+
       - if: matrix.volume == '/'
         run: sudo chmod a+w /
 
@@ -52,6 +56,7 @@ jobs:
         volume:
           - /tmp
           - .
+          - relative-path
           # MacOS denies `sudo chmod a+w /`
           #- /
         asroot:
@@ -68,6 +73,9 @@ jobs:
       - run: brew install argp-standalone
       - run: make
 
+      - if: matrix.volume == 'relative-path'
+        run: mkdir relative-path
+
       - run: ./f3write -V
       - run: ./f3write --help
       - run: ${{ matrix.asroot.sudo }}./f3write -s 2 -e 4 -w 50000 ${{ matrix.volume }}
@@ -89,6 +97,8 @@ jobs:
             windows: 'C:'
           - cygwin: .
             windows: .
+          - cygwin: relative-path
+            windows: relative-path
           - cygwin: /
             windows: 'C:\cygwin'
 
@@ -104,6 +114,9 @@ jobs:
 
       - run: "$Env:LDFLAGS = '-Wl,--stack,4000000'; make"
 
+      - if: matrix.volume.windows == 'relative-path'
+        run: New-Item -ItemType Directory -Path relative-path
+
       - run: '& .\f3write.exe -V'
       - run: '& .\f3write.exe --help'
       - run: '& .\f3write.exe -s 2 -e 4 -w 50000 ${{ matrix.volume.cygwin }}'