diff --git a/job_creator.php b/job_creator.php
index db8d83e..6b9a611 100644
--- a/job_creator.php
+++ b/job_creator.php
@@ -26,10 +26,14 @@ public function getInstallerVersion(): string
         if (in_array($repo, NO_INSTALLER_LOCKSTEPPED_REPOS) || in_array($repo, NO_INSTALLER_UNLOCKSTEPPED_REPOS)) {
             return '';
         }
-        $branch = $this->getCleanedBranch();
+        $branch = $this->getCleanedBranch(true);
+        $isReleaseBranch = preg_match('#^[0-9\.]+-release$#', $branch);
         $cmsMajor = $this->getCmsMajor();
         // repo is a lockstepped repo
-        if (in_array($repo, LOCKSTEPPED_REPOS) && is_numeric($branch)) {
+        if (in_array($repo, LOCKSTEPPED_REPOS) && (is_numeric($branch) || $isReleaseBranch)) {
+            if ($isReleaseBranch) {
+                return 'dev-' . preg_replace('#^([0-9])#', $cmsMajor, $branch);
+            }
             // e.g. ['4', '11']
             $portions = explode('.', $branch);
             if (count($portions) == 1) {
@@ -43,7 +47,10 @@ public function getInstallerVersion(): string
             foreach (INSTALLER_TO_REPO_MINOR_VERSIONS[$installerVersion] as $_repo => $_repoVersions) {
                 $repoVersions = is_array($_repoVersions) ? $_repoVersions : [$_repoVersions];
                 foreach ($repoVersions as $repoVersion) {
-                    if ($repo === $_repo && $repoVersion === $branch) {
+                    if ($repo === $_repo && $repoVersion === preg_replace('#-release$#', '', $branch)) {
+                        if ($isReleaseBranch) {
+                            return 'dev-' . $installerVersion . '-release';
+                        }
                         return $installerVersion . '.x-dev';
                     }
                 }
@@ -63,7 +70,11 @@ public function getInstallerVersion(): string
             $minorPortions = array_map(fn($portions) => (int) explode('.', $portions)[1], $installerVersions);
             sort($minorPortions);
             $minorPortion = $minorPortions[count($minorPortions) - 1];
-            return $cmsMajor . '.' . $minorPortion . '.x-dev';
+            $installerVersion = $cmsMajor . '.' . $minorPortion;
+            if ($isReleaseBranch) {
+                return 'dev-' . $installerVersion . '-release';
+            }
+            return $installerVersion . '.x-dev';
         }
     }
     
@@ -275,12 +286,12 @@ private function getCmsMajorFromComposerJson(): string
         return '';
     }
 
-    private function getCleanedBranch(): string
+    private function getCleanedBranch(bool $allowReleaseSuffix = false): string
     {
         $branch = $this->branch;
         // e.g. pulls/4.10/some-bugfix or pulls/4/some-feature
         // for push events to the creative-commoners account
-        if (preg_match('#^pulls/([0-9\.]+)/#', $branch, $matches)) {
+        if (preg_match('#^pulls/([0-9\.]+(-release)?)/#', $branch, $matches)) {
             $branch = $matches[1];
         }
         // fallback to parent branch if available
@@ -292,7 +303,9 @@ private function getCleanedBranch(): string
             $branch = $this->parentBranch;
         }
         // e.g. 4.10-release
-        $branch = preg_replace('#^([0-9\.]+)-release$#', '$1', $branch);
+        if (!$allowReleaseSuffix) {
+            $branch = preg_replace('#^([0-9\.]+)-release$#', '$1', $branch);
+        }
         return $branch;
     }
     
diff --git a/tests/JobCreatorTest.php b/tests/JobCreatorTest.php
index f03a8e4..cbcc7c1 100644
--- a/tests/JobCreatorTest.php
+++ b/tests/JobCreatorTest.php
@@ -90,6 +90,7 @@ private function getCurrentMinorInstallerVersion(string $cmsMajor): string
     public function provideGetInstallerVersion(): array
     {
         $nextMinor = '4.x-dev';
+        $nextMinorRelease = 'dev-' . $this->getCurrentMinorInstallerVersion('4') . '-release';
         $currentMinor = $this->getCurrentMinorInstallerVersion('4') . '.x-dev';
         return [
             // no-installer repo
@@ -108,8 +109,9 @@ public function provideGetInstallerVersion(): array
             ['myaccount/silverstripe-framework', 'pulls/4/mybugfix', '4.x-dev'],
             ['myaccount/silverstripe-framework', 'pulls/4.10/mybugfix', '4.10.x-dev'],
             ['myaccount/silverstripe-framework', 'pulls/burger/myfeature', $currentMinor],
-            ['myaccount/silverstripe-framework', '4-release', '4.x-dev'],
-            ['myaccount/silverstripe-framework', '4.10-release', '4.10.x-dev'],
+            ['myaccount/silverstripe-framework', '4-release', 'dev-4-release'],
+            ['myaccount/silverstripe-framework', '4.10-release', 'dev-4.10-release'],
+            ['myaccount/silverstripe-framework', 'pulls/4.10-release/some-change', 'dev-4.10-release'],
             // lockstepped repo with 1.* naming
             ['myaccount/silverstripe-admin', '1', '4.x-dev'],
             ['myaccount/silverstripe-admin', '1.10', '4.10.x-dev'],
@@ -117,8 +119,9 @@ public function provideGetInstallerVersion(): array
             ['myaccount/silverstripe-admin', 'pulls/1/mybugfix', '4.x-dev'],
             ['myaccount/silverstripe-admin', 'pulls/1.10/mybugfix', '4.10.x-dev'],
             ['myaccount/silverstripe-admin', 'pulls/burger/myfeature', $currentMinor],
-            ['myaccount/silverstripe-admin', '1-release', '4.x-dev'],
-            ['myaccount/silverstripe-admin', '1.10-release', '4.10.x-dev'],
+            ['myaccount/silverstripe-admin', '1-release', 'dev-4-release'],
+            ['myaccount/silverstripe-admin', '1.10-release', 'dev-4.10-release'],
+            ['myaccount/silverstripe-admin', 'pulls/1.10-release/some-change', 'dev-4.10-release'],
             // non-lockedstepped repo
             ['myaccount/silverstripe-tagfield', '2', $nextMinor],
             ['myaccount/silverstripe-tagfield', '2.9', $currentMinor],
@@ -126,12 +129,14 @@ public function provideGetInstallerVersion(): array
             ['myaccount/silverstripe-tagfield', 'pulls/2/mybugfix', $nextMinor],
             ['myaccount/silverstripe-tagfield', 'pulls/2.9/mybugfix', $currentMinor],
             ['myaccount/silverstripe-tagfield', 'pulls/burger/myfeature', $currentMinor],
-            ['myaccount/silverstripe-tagfield', '2-release', $nextMinor],
-            ['myaccount/silverstripe-tagfield', '2.9-release', $currentMinor],
+            ['myaccount/silverstripe-tagfield', '2-release', 'dev-' . $this->getCurrentMinorInstallerVersion('4') . '-release'],
+            ['myaccount/silverstripe-tagfield', '2.9-release', $nextMinorRelease],
+            ['myaccount/silverstripe-tagfield', 'pulls/2.9-release/some-change', $nextMinorRelease],
             // hardcoded repo version
             ['myaccount/silverstripe-session-manager', '1', $nextMinor],
             ['myaccount/silverstripe-session-manager', '1.2', '4.10.x-dev'],
             ['myaccount/silverstripe-session-manager', 'burger', $currentMinor],
+            ['myaccount/silverstripe-session-manager', '1.2-release', 'dev-4.10-release'],
             // hardcoded repo version using array
             ['myaccount/silverstripe-html5', '2', $nextMinor],
             ['myaccount/silverstripe-html5', '2.2', '4.10.x-dev'],
@@ -329,7 +334,7 @@ public function provideParentBranch(): array
                     parent_branch: '4.10-release'
                     EOT
                 ]),
-                '4.10.x-dev'
+                'dev-4.10-release'
             ],
             [
                 implode("\n", [