diff --git a/docs/development/plugin-triggers.md b/docs/development/plugin-triggers.md
index cb09115e3..e63fff4ef 100644
--- a/docs/development/plugin-triggers.md
+++ b/docs/development/plugin-triggers.md
@@ -83,6 +83,36 @@ set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 # TODO
 ```
 
+### `builder-create-dokku-image`
+
+- Description: Allows modification of the configured dokku-image
+- Invoked by: `dokku deploy`
+- Arguments: `$BUILDER_TYPE` `$APP` `$SOURCECODE_WORK_DIR` `$DOKKU_IMAGE`
+- Example:
+
+```shell
+#!/usr/bin/env bash
+
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+# TODO
+```
+
+### `builder-dokku-image`
+
+- Description: Allows modification of the used dokku-image.
+- Invoked by: `dokku deploy`
+- Arguments: `$BUILDER_TYPE` `$APP` `$SOURCECODE_WORK_DIR` `$DOKKU_IMAGE`
+- Example:
+
+```shell
+#!/usr/bin/env bash
+
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+# TODO
+```
+
 ### `builder-release`
 
 - Description: Triggers the artifact release process
diff --git a/plugins/builder-herokuish/builder-build b/plugins/builder-herokuish/builder-build
index 051294d6c..61194b8a6 100755
--- a/plugins/builder-herokuish/builder-build
+++ b/plugins/builder-herokuish/builder-build
@@ -24,6 +24,10 @@ trigger-builder-build-builder-herokuish() {
   eval "$(config_export app "$APP")"
 
   DOKKU_IMAGE="$(config_get "$APP" DOKKU_IMAGE || echo "$DOKKU_IMAGE")"
+  plugn trigger builder-create-dokku-image "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR" "$DOKKU_IMAGE"
+  NEW_DOKKU_IMAGE=$(plugn trigger builder-dokku-image "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR" "$DOKKU_IMAGE")
+  [[ -n "$NEW_DOKKU_IMAGE" ]] && DOKKU_IMAGE="$NEW_DOKKU_IMAGE"
+
   CID=$(tar -c . | "$DOCKER_BIN" run "${DOCKER_RUN_LABEL_ARGS[@]}" $DOKKU_GLOBAL_RUN_ARGS -i -a stdin "$DOKKU_IMAGE" /bin/bash -c "mkdir -p /app && tar -xC /app")
   test "$("$DOCKER_BIN" wait "$CID")" -eq 0