diff --git a/.github/workflows/continuous-delivery.yml b/.github/workflows/continuous-delivery.yml
index 749e799..0b09e8f 100644
--- a/.github/workflows/continuous-delivery.yml
+++ b/.github/workflows/continuous-delivery.yml
@@ -91,7 +91,7 @@ jobs:
         echo "PG_IMAGE=$(echo "${BUILD_METADATA}" | jq -r '.["minimal"].["image.name"]' | grep -oP '[^,]*\d{12}[^,]*')" >> $GITHUB_ENV
 
   call-reusable-e2e:
-    if: github.event_name == 'schedule'
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
     needs:
       - build-pg
     uses: ./.github/workflows/reusable-e2e.yml
diff --git a/Dockerfile b/Dockerfile
index f10d2d0..6e26241 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -126,7 +126,7 @@ USER 26
 FROM standard AS postgis
 USER root
 ARG POSTGIS_REPO=https://github.com/postgis/postgis.git
-ARG POSTGIS_BRANCH=master
+ARG POSTGIS_BRANCH=stable-3.6
 
 RUN apt-get update && \
 	apt-get install -y --no-install-recommends \