diff --git a/.github/workflows/push-documentation.yml b/.github/workflows/push-documentation.yml
index f8a6652ca..56831a966 100644
--- a/.github/workflows/push-documentation.yml
+++ b/.github/workflows/push-documentation.yml
@@ -21,6 +21,8 @@ jobs:
           cd docs
           ./gradlew --console=plain -q combineDocs
       - name: Publish documentation
+        env:
+          CI_BRANCH: ${{ github.ref_name }}
         run: |
           cd docs
           ./gradlew --console=plain --info :antora:publishDocs :gh-pages:publishDocs \
diff --git a/docs/antora/build.gradle b/docs/antora/build.gradle
index 71c92dcfa..344af7290 100644
--- a/docs/antora/build.gradle
+++ b/docs/antora/build.gradle
@@ -3,7 +3,7 @@ plugins {
 }
 
 ext {
-    currentBranch = System.getenv('TRAVIS_BRANCH') ?: 'not-on-travis-ci'
+    currentBranch = System.getenv('CI_BRANCH') ?: 'not-on-ci'
     pushDocs = currentBranch.matches(~/^(master|development-3.x|maintenance-1.5|maintenance-1.6)$/)
 }
 
@@ -36,7 +36,7 @@ gitPublish {
 }
 
 task publishDocs {
-    if(pushDocs) {
+    if (pushDocs) {
         dependsOn gitPublishPush
     }
     doFirst {
diff --git a/docs/gh-pages/build.gradle b/docs/gh-pages/build.gradle
index 0b23b76ce..a99c14873 100644
--- a/docs/gh-pages/build.gradle
+++ b/docs/gh-pages/build.gradle
@@ -3,7 +3,7 @@ plugins {
 }
 
 ext {
-    currentBranch = System.getenv('TRAVIS_BRANCH') ?: 'not-on-travis-ci'
+    currentBranch = System.getenv('CI_BRANCH') ?: 'not-on-ci'
     pushDocs = currentBranch.matches(~/^master|development-.+|maintenance-.+$/)
 }
 
@@ -25,7 +25,7 @@ gitPublish {
 }
 
 task publishDocs {
-    if(pushDocs) {
+    if (pushDocs) {
         dependsOn gitPublishPush
     }
     doFirst {