diff --git a/.github/workflows/build-docker-monorepo.yml b/.github/workflows/build-docker-monorepo.yml
index 325a439199e1..becf603926d1 100644
--- a/.github/workflows/build-docker-monorepo.yml
+++ b/.github/workflows/build-docker-monorepo.yml
@@ -61,6 +61,14 @@ jobs:
           elif [[ "$GITHUB_EVENT_NAME" == "pull_request" ]]; then
             gh_set_output tags "type=ref,event=pr"
             gh_set_output images "ghcr.io/automattic/jetpack-monorepo"
+          elif [[ "$GITHUB_EVENT_NAME" == "workflow_dispatch" ]]; then
+            if [[ "$GITHUB_REF" == "refs/heads/trunk" ]]; then
+              gh_set_output tags "type=raw,latest"
+              gh_set_output images $'automattic/jetpack-wordpress-dev\nghcr.io/automattic/jetpack-wordpress-dev'
+            else
+              echo "Workflow dispatch for non-trunk ref $GITHUB_REF is not supported"
+              exit 1
+            fi
           else
             echo "Unknown GITHUB_EVENT_NAME $GITHUB_EVENT_NAME"
             exit 1
diff --git a/.github/workflows/build-docker.yml b/.github/workflows/build-docker.yml
index 0eea8672abbf..7e8304082408 100644
--- a/.github/workflows/build-docker.yml
+++ b/.github/workflows/build-docker.yml
@@ -63,6 +63,14 @@ jobs:
           elif [[ "$GITHUB_EVENT_NAME" == "pull_request" ]]; then
             gh_set_output tags "type=ref,event=pr"
             gh_set_output images "ghcr.io/automattic/jetpack-wordpress-dev"
+          elif [[ "$GITHUB_EVENT_NAME" == "workflow_dispatch" ]]; then
+            if [[ "$GITHUB_REF" == "refs/heads/trunk" ]]; then
+              gh_set_output tags "type=raw,latest"
+              gh_set_output images $'automattic/jetpack-wordpress-dev\nghcr.io/automattic/jetpack-wordpress-dev'
+            else
+              echo "Workflow dispatch for non-trunk ref $GITHUB_REF is not supported"
+              exit 1
+            fi
           else
             echo "Unknown GITHUB_EVENT_NAME $GITHUB_EVENT_NAME"
             exit 1