diff --git a/.github/workflows/postgres.yml b/.github/workflows/postgres.yml
index 24089d2..a38a570 100644
--- a/.github/workflows/postgres.yml
+++ b/.github/workflows/postgres.yml
@@ -12,11 +12,13 @@ on:
       - main
     paths:
       - postgres/**
+      - .github/workflows/postgres.yml
   pull_request:
     branches:
       - main
     paths:
       - postgres/**
+      - .github/workflows/postgres.yml
   workflow_dispatch:
     inputs: {}
 
@@ -46,7 +48,7 @@ jobs:
 
       - name: Read version from Dockerfile
         id: docker
-        run: echo "version=$(./extract-version.sh ./postgres/Dockerfile)" >> $GITHUB_OUTPUT
+        run: echo "version=$(./extract-version.sh ./postgres/${{ matrix.image.file || 'Dockerfile' }})" >> $GITHUB_OUTPUT
 
       - name: Login to GHCR
         if: github.event_name != 'pull_request'