diff --git a/GitVersionCore/BuildServers/GitHelper.cs b/GitVersionCore/BuildServers/GitHelper.cs
index aa083b9544..a2b040da18 100644
--- a/GitVersionCore/BuildServers/GitHelper.cs
+++ b/GitVersionCore/BuildServers/GitHelper.cs
@@ -7,7 +7,7 @@ namespace GitVersion
 
     public static class GitHelper
     {
-        const string MergeMessageRegexPattern = "refs/heads/(pr|pull(-requests)?/(?<issuenumber>[0-9]*)/merge)";
+        const string MergeMessageRegexPattern = "refs/heads/(pr|pull(-requests)?/(?<issuenumber>[0-9]*)/(merge|head))";
 
         public static void NormalizeGitDirectory(string gitDirectory, Authentication authentication)
         {
@@ -76,6 +76,7 @@ public static string ExtractIssueNumber(string mergeMessage)
             // Dynamic: refs/heads/pr/5
             // Github Message: refs/heads/pull/5/merge
             // Stash Message:  refs/heads/pull-requests/5/merge
+            // refs/heads/pull/5/head
             var regex = new Regex(MergeMessageRegexPattern);
             var match = regex.Match(mergeMessage);
 
diff --git a/GitVersionExe.Tests/PullRequestInTeamCityTest.cs b/GitVersionExe.Tests/PullRequestInTeamCityTest.cs
index d056a7eea4..66d5ad1bc2 100644
--- a/GitVersionExe.Tests/PullRequestInTeamCityTest.cs
+++ b/GitVersionExe.Tests/PullRequestInTeamCityTest.cs
@@ -10,6 +10,7 @@ public class PullRequestInTeamCityTest
 
     [TestCase("refs/pull-requests/5/merge")]
     [TestCase("refs/pull/5/merge")]
+    [TestCase("refs/heads/pull/5/head")]
     public void GivenARemoteWithATagOnMaster_AndAPullRequestWithTwoCommits_AndBuildIsRunningInTeamCity_VersionIsCalculatedProperly(string pullRequestRef)
     {
         using (var fixture = new EmptyRepositoryFixture(new Config()))