Merge branch 'stable-3.0' into stable-3.1

* stable-3.0:
  Update Gerrit API to 3.0.15
  Update Gerrit API to 2.16.26

Change-Id: I4d14c7de8fd3aa032ab5e6f30285b48816e1976c
diff --git a/README.md b/README.md
index 3f0d7de..725a35d 100644
--- a/README.md
+++ b/README.md
@@ -36,9 +36,9 @@
 
 ```python
 load("@com_googlesource_gerrit_bazlets//:gerrit_api.bzl", "gerrit_api")
-gerrit_api(version = "3.0.9",
-           plugin_api_sha1 = "dbcadf2c198b1ee1b74678855e8e10b2c403de1f",
-           acceptance_framework_sha1 = "799cb104f2c0de4394528e38ad487557dd69bb49")
+gerrit_api(version = "3.1.6",
+           plugin_api_sha1 = "e57f6465c9805f568082bffffd61a2771f10d68a",
+           acceptance_framework_sha1 = "ebfd50383f8593678b451c81dbc332db8e8da188")
 ```
 
 If the version ends in `-SNAPSHOT`, the jars are consumed from the local
@@ -47,7 +47,7 @@
 
 ```python
 load("@com_googlesource_gerrit_bazlets//:gerrit_api.bzl", "gerrit_api")
-gerrit_api(version = "3.0.10-SNAPSHOT")
+gerrit_api(version = "3.1.7-SNAPSHOT")
 ```
 
 <a name="basic-example"></a>
diff --git a/gerrit_api.bzl b/gerrit_api.bzl
index 2bd010b..0016cb1 100644
--- a/gerrit_api.bzl
+++ b/gerrit_api.bzl
@@ -7,9 +7,9 @@
 gerrit_api is rule for fetching Gerrit plugin API using Bazel.
 """
 
-def gerrit_api(version = "3.0.15",
-               plugin_api_sha1 = "fda1d104dbe61efb009d7379775f3406d7eec889",
-               acceptance_framework_sha1 = "7fee10b950c38df770fc79bd7c183c3d65b7dc6d"):
+def gerrit_api(version = "3.1.11",
+               plugin_api_sha1 = "13b7ac52998a0f7eb705224fa13cb4acf6323c8c",
+               acceptance_framework_sha1 = "6420b052a708a9da1b60924f8f4c50b5e8b31256"):
     gerrit_api_version(
         name = "gerrit_api_version",
         version = version,