diff --git a/test/cases/040_packages/005_extend/000_ext4/test.yml b/test/cases/040_packages/005_extend/000_ext4/test.yml
index a374d9d83..264e429de 100644
--- a/test/cases/040_packages/005_extend/000_ext4/test.yml
+++ b/test/cases/040_packages/005_extend/000_ext4/test.yml
@@ -6,7 +6,7 @@ init:
   - linuxkit/runc:c1f0db27e71d948f3134b31ce76276f843849b0a
 onboot:
   - name: extend
-    image: linuxkit/extend:v0.7
+    image: linuxkit/extend:79475e430851110b39d93dfb4a7e8ea041b57dc0
   - name: mount
     image: linuxkit/mount:v0.7
     command: ["/usr/bin/mountie", "/var/lib/docker"]
diff --git a/test/cases/040_packages/005_extend/001_btrfs/test.yml b/test/cases/040_packages/005_extend/001_btrfs/test.yml
index a69e49f53..5abdafc31 100644
--- a/test/cases/040_packages/005_extend/001_btrfs/test.yml
+++ b/test/cases/040_packages/005_extend/001_btrfs/test.yml
@@ -9,7 +9,7 @@ onboot:
     image: linuxkit/modprobe:v0.7
     command: ["modprobe", "btrfs"]
   - name: extend
-    image: linuxkit/extend:v0.7
+    image: linuxkit/extend:79475e430851110b39d93dfb4a7e8ea041b57dc0
     command: ["/usr/bin/extend", "-type", "btrfs"]
   - name: mount
     image: linuxkit/mount:v0.7
diff --git a/test/cases/040_packages/005_extend/002_xfs/test.yml b/test/cases/040_packages/005_extend/002_xfs/test.yml
index 058c14572..2d42c5ef3 100644
--- a/test/cases/040_packages/005_extend/002_xfs/test.yml
+++ b/test/cases/040_packages/005_extend/002_xfs/test.yml
@@ -6,7 +6,7 @@ init:
   - linuxkit/runc:c1f0db27e71d948f3134b31ce76276f843849b0a
 onboot:
   - name: extend
-    image: linuxkit/extend:v0.7
+    image: linuxkit/extend:79475e430851110b39d93dfb4a7e8ea041b57dc0
     command: ["/usr/bin/extend", "-type", "xfs"]
   - name: mount
     image: linuxkit/mount:v0.7