diff --git a/build.gradle b/build.gradle
index 76710e709..adf37a353 100644
--- a/build.gradle
+++ b/build.gradle
@@ -121,7 +121,7 @@ jacocoTestReport {
     }
 }
 
-String version = '6.4.7'
+String version = '6.4.8'
 
 task updateVersion {
     doLast {
diff --git a/vars/publishGradleCheckTestResults.groovy b/vars/publishGradleCheckTestResults.groovy
index 61bfce2b7..45dbec440 100644
--- a/vars/publishGradleCheckTestResults.groovy
+++ b/vars/publishGradleCheckTestResults.groovy
@@ -99,7 +99,7 @@ void indexFailedTestData() {
                               "pull_request_owner": { "type": "keyword" },
                               "invoke_type": { "type": "keyword" },
                               "pull_request_title": { "type": "text" },
-                              "git_reference": { "type": "text" },
+                              "git_reference": { "type": "keyword" },
                               "test_class": { "type": "keyword" },
                               "test_name": { "type": "keyword" },
                               "test_status": { "type": "keyword" },