diff --git a/Changelog.md b/Changelog.md
index 878eeb35..4da94146 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,6 +2,7 @@
 
 **latest**
 - init: added GOOGLE_ANALYTICS_ID configuration option
+- added support for mantis issue tracker
 
 **7.6.2**
 - gitlab: upgrade to CE v.7.6.2
diff --git a/README.md b/README.md
index 608671d7..7402ebbc 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,7 @@
   - [External Issue Trackers](#external-issue-trackers)
     - [Redmine](#redmine)
     - [Jira](#jira)
+    - [Mantis](#mantis)
   - [Mapping host user and group](#mapping-host-user-and-group)
   - [Piwik](#piwik)
   - [Available Configuration Parameters](#available-configuration-parameters)
@@ -671,6 +672,12 @@ Support for issue tracking using Jira can be added by specifying the complete UR
 
 For example, if your Jira server is accessible at `https://jira.example.com`, then adding `-e 'JIRA_URL=https://jira.example.com'` to the docker run command enables Jira support in GitLab
 
+#### Mantis
+
+Support for issue tracking using [mantis](https://www.mantisbt.org/) can be added by specifying the complete URL of the mantis web server in the `MANTIS_URL` configuration option.
+
+For example, if your mantis server is accessible at `https://mantis.example.com`, then adding `-e 'MANTIS_URL=https://mantis.example.com'` to the docker run command enables mantis support in GitLab.
+
 ### Host UID / GID Mapping
 
 Per default the container is configured to run gitlab as user and group `git` with `uid` and `gid` `1000`. The host possibly uses this ids for different purposes leading to unfavorable effects. From the host it appears as if the mounted data volumes are owned by the host's user/group `1000`.
diff --git a/assets/config/gitlabhq/gitlab.yml b/assets/config/gitlabhq/gitlab.yml
index 9ec7798e..bb9054b6 100644
--- a/assets/config/gitlabhq/gitlab.yml
+++ b/assets/config/gitlabhq/gitlab.yml
@@ -125,6 +125,12 @@ production: &base
       issues_url: "{{JIRA_URL}}/browse/:id"
       new_issue_url: "{{JIRA_URL}}/secure/CreateIssue.jspa"
 
+    mantis:
+      title: "Mantis"
+      project_url: "{{MANTIS_URL}}/set_project.php?project_id=:issues_tracker_id&ref=view_all_bug_page.php"
+      issues_url: "{{MANTIS_URL}}/view.php?id=:id"
+      new_issue_url: "{{MANTIS_URL}}/set_project.php?project_id=:issues_tracker_id&ref=bug_report_page.php"
+
   ## Gravatar
   ## For Libravatar see: http://doc.gitlab.com/ce/customization/libravatar.html
   gravatar:
diff --git a/assets/init b/assets/init
index 9b2c495c..5cd044dc 100755
--- a/assets/init
+++ b/assets/init
@@ -98,6 +98,7 @@ GITLAB_HTTPS_HSTS_MAXAGE=${GITLAB_HTTPS_HSTS_MAXAGE:-31536000}
 
 REDMINE_URL=${REDMINE_URL:-}
 JIRA_URL=${JIRA_URL:-}
+MANTIS_URL=${MANTIS_URL:-}
 
 OAUTH_ALLOW_SSO=${OAUTH_ALLOW_SSO:-false}
 OAUTH_BLOCK_AUTO_CREATED_USERS=${OAUTH_BLOCK_AUTO_CREATED_USERS:-true}
@@ -515,6 +516,18 @@ else
   sudo -u git -H sed '/new_issue_url: "{{JIRA_URL}}/d' -i config/gitlab.yml
 fi
 
+# apply mantis configuration
+if [ -n "${MANTIS_URL}" ]; then
+  sudo -u git -H sed 's,{{MANTIS_URL}},'"${MANTIS_URL}"',g' -i config/gitlab.yml
+else
+  # remove the jira configuration block
+  sudo -u git -H sed '/mantis:/d' -i config/gitlab.yml
+  sudo -u git -H sed '/title: "Mantis"/d' -i config/gitlab.yml
+  sudo -u git -H sed '/project_url: "{{MANTIS_URL}}/d' -i config/gitlab.yml
+  sudo -u git -H sed '/issues_url: "{{MANTIS_URL}}/d' -i config/gitlab.yml
+  sudo -u git -H sed '/new_issue_url: "{{MANTIS_URL}}/d' -i config/gitlab.yml
+fi
+
 # apply oauth configuration
 
 # google