diff --git a/oni-groovy.el b/oni-groovy.el
index cb6be5e..69036a8 100644
--- a/oni-groovy.el
+++ b/oni-groovy.el
@@ -4,8 +4,8 @@
 
 ;; Author: Tom Willemse <tom@ryuslash.org>
 ;; Keywords: local
-;; Version: 2019.1210.230729
-;; Package-Requires: (groovy-mode groovy-imports rainbow-delimiters)
+;; Version: 2020.1019.090337
+;; Package-Requires: (groovy-mode groovy-imports rainbow-delimiters jenkinsfile-mode)
 
 ;; This program is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
@@ -42,6 +42,9 @@
 (add-hook 'groovy-mode-hook 'rainbow-delimiters-mode)
 (add-hook 'groovy-mode-hook 'oni-groovy--auto-fill-mode)
 
+;;;###autoload
+(add-to-list 'auto-mode-alist `(,(rx ".pipeline" string-end) . jenkinsfile-mode))
+
 ;;;###autoload(with-eval-after-load 'groovy-mode (require 'oni-groovy))
 
 (provide 'oni-groovy)
diff --git a/test/integration/oni-groovy.bats b/test/integration/oni-groovy.bats
new file mode 100755
index 0000000..5a768a3
--- /dev/null
+++ b/test/integration/oni-groovy.bats
@@ -0,0 +1,41 @@
+#!/usr/bin/env bats
+
+@test "Opening a .groovy file loads oni-groovy" {
+    run emacs -batch -l package -f package-initialize \
+        -visit test.groovy \
+        -eval "(prin1 (featurep 'oni-groovy))"
+
+    echo "$output"
+
+    [[ "$output" == *"t" ]]
+}
+
+@test "Opening a Jenkinsfile loads oni-groovy" {
+    run emacs -batch -l package -f package-initialize \
+        -visit Jenkinsfile \
+        -eval "(prin1 (featurep 'oni-groovy))"
+
+    echo "$output"
+
+    [[ "$output" == *"t" ]]
+}
+
+@test "Opening a .pipeline file loads oni-groovy" {
+    run emacs -batch -l package -f package-initialize \
+        -visit test.pipeline \
+        -eval "(prin1 (featurep 'oni-groovy))"
+
+    echo "$output"
+
+    [[ "$output" == *"t" ]]
+}
+
+@test "Opening a .pipeline file loads jenkinsfile-mode" {
+    run emacs -batch -l package -f package-initialize \
+        -visit "test.pipeline" \
+        -eval "(prin1 major-mode)"
+
+    echo "$output"
+
+    [[ "$output" == *"jenkinsfile-mode" ]]
+}