diff --git a/images/openwrt.yaml b/images/openwrt.yaml
index dad26dbc..09b504b1 100644
--- a/images/openwrt.yaml
+++ b/images/openwrt.yaml
@@ -224,6 +224,15 @@ actions:
   architectures:
   - amd64
 
+- trigger: post-unpack
+  action: |
+    #!/bin/sh
+    # Ensure /var/log exists before running package manager.
+    # Otherwise, the command can fail due to missing directory.
+    mkdir -p /var/log
+  releases:
+  - snapshot
+
 - trigger: post-files
   action: |
     #!/bin/sh