diff --git a/ChangeLog.rst b/ChangeLog.rst
index a9cb51652..5b2c49781 100644
--- a/ChangeLog.rst
+++ b/ChangeLog.rst
@@ -1,6 +1,11 @@
 ChangeLog
 =========
 
+Version 1.5.1_ - 2018-06-23
+---------------------------
+
+* Fix the ProjectPipelineJob base class (regression)
+
 Version 1.5.0_ - 2018-06-22
 ---------------------------
 
@@ -638,6 +643,7 @@ Version 0.1 - 2013-07-08
 
 * Initial release
 
+.. _1.5.1: https://github.com/python-gitlab/python-gitlab/compare/1.4.0...1.5.1
 .. _1.5.0: https://github.com/python-gitlab/python-gitlab/compare/1.4.0...1.5.0
 .. _1.4.0: https://github.com/python-gitlab/python-gitlab/compare/1.3.0...1.4.0
 .. _1.3.0: https://github.com/python-gitlab/python-gitlab/compare/1.2.0...1.3.0
diff --git a/docs/gl_objects/protected_branches.rst b/docs/gl_objects/protected_branches.rst
index 006bb8bc8..bd2b22b87 100644
--- a/docs/gl_objects/protected_branches.rst
+++ b/docs/gl_objects/protected_branches.rst
@@ -29,7 +29,11 @@ Get a single protected branch::
 
 Create a protected branch::
 
-    p_branch = project.protectedbranches.create({'name': '*-stable'})
+    p_branch = project.protectedbranches.create({
+        'name': '*-stable',
+        'merge_access_level': gitlab.DEVELOPER_ACCESS,
+        'push_access_level': gitlab.MASTER_ACCESS
+    })
 
 Delete a protected branch::
 
diff --git a/gitlab/__init__.py b/gitlab/__init__.py
index 0c69a99a6..1c13093a9 100644
--- a/gitlab/__init__.py
+++ b/gitlab/__init__.py
@@ -30,7 +30,7 @@
 from gitlab.exceptions import *  # noqa
 
 __title__ = 'python-gitlab'
-__version__ = '1.5.0'
+__version__ = '1.5.1'
 __author__ = 'Gauvain Pocentek'
 __email__ = 'gauvain@pocentek.net'
 __license__ = 'LGPL3'
diff --git a/gitlab/v4/objects.py b/gitlab/v4/objects.py
index 4f571583d..9327e06f7 100644
--- a/gitlab/v4/objects.py
+++ b/gitlab/v4/objects.py
@@ -2494,7 +2494,7 @@ def raw(self, file_path, ref, streamed=False, action=None, chunk_size=1024,
         return utils.response_content(result, streamed, action, chunk_size)
 
 
-class ProjectPipelineJob(RESTManager):
+class ProjectPipelineJob(RESTObject):
     pass