diff --git a/composer.json b/composer.json
index 9aa8a336..3541b214 100644
--- a/composer.json
+++ b/composer.json
@@ -48,5 +48,18 @@
         "psr-4": {
             "Laminas\\AutomaticReleases\\Test\\Unit\\": "test/unit"
         }
+    },
+    "scripts": {
+        "check": [
+            "@cs-check",
+            "@static-analysis",
+            "@test"
+        ],
+        "cs-check": "phpcs",
+        "cs-fix": "phpcbf",
+        "static-analysis": "psalm --shepherd --stats",
+        "update-baseline": "psalm --update-baseline",
+        "test": "phpunit --colors=always",
+        "test-coverage": "phpunit --colors=always --coverage-clover clover.xml"
     }
 }
diff --git a/feature/default-branch-switching.feature b/feature/default-branch-switching.feature
index f169a83f..d70aba3b 100644
--- a/feature/default-branch-switching.feature
+++ b/feature/default-branch-switching.feature
@@ -40,7 +40,49 @@ Feature: Default branch switching
       | 1.3.x  |
     And the default branch should be "1.3.x"
 
-  Scenario: A pre-existing branch of a greater major release is set as default branch on release
+  Scenario: A new minor branch on a pre-existing major branch is created and set as default branch on release
+    Given following existing branches:
+      | branch |
+      | 1.0.x  |
+      | 1.1.x  |
+      | 1.2.x  |
+      | 2.0.x  |
+    And following open milestones:
+      | name  |
+      | 2.0.0 |
+    And the default branch is "1.0.x"
+    When I close milestone "2.0.0"
+    Then these should be the existing branches:
+      | branch |
+      | 1.0.x  |
+      | 1.1.x  |
+      | 1.2.x  |
+      | 2.0.x  |
+      | 2.1.x  |
+    And the default branch should be "2.1.x"
+
+  Scenario: A pre-existing branch of a new major release is not set as default branch on release
+    Given following existing branches:
+      | branch |
+      | 1.0.x  |
+      | 1.1.x  |
+      | 1.2.x  |
+      | 2.0.x  |
+    And following open milestones:
+      | name  |
+      | 1.2.0 |
+    And the default branch is "1.0.x"
+    When I close milestone "1.2.0"
+    Then these should be the existing branches:
+      | branch |
+      | 1.0.x  |
+      | 1.1.x  |
+      | 1.2.x  |
+      | 1.3.x  |
+      | 2.0.x  |
+    And the default branch should be "1.3.x"
+
+  Scenario: A pre-existing minor branch of a greater major release is set as default branch on release
     Given following existing branches:
       | branch |
       | 1.0.x  |
diff --git a/src/Git/Value/MergeTargetCandidateBranches.php b/src/Git/Value/MergeTargetCandidateBranches.php
index c8c2f610..1df65e22 100644
--- a/src/Git/Value/MergeTargetCandidateBranches.php
+++ b/src/Git/Value/MergeTargetCandidateBranches.php
@@ -82,7 +82,9 @@ public function newestFutureReleaseBranchAfter(SemVerVersion $version): BranchNa
         $futureReleaseBranch = Vec\filter(
             Vec\reverse($this->sortedBranches),
             static function (BranchName $branch) use ($nextMinor): bool {
-                return $nextMinor->lessThanEqual($branch->targetMinorReleaseVersion());
+                $targetVersion = $branch->targetMinorReleaseVersion();
+
+                return ! $targetVersion->isNewMajorRelease() && $nextMinor->lessThanEqual($targetVersion);
             },
         );
 
diff --git a/test/unit/Git/Value/MergeTargetCandidateBranchesTest.php b/test/unit/Git/Value/MergeTargetCandidateBranchesTest.php
index d75b6ee6..875b31dd 100644
--- a/test/unit/Git/Value/MergeTargetCandidateBranchesTest.php
+++ b/test/unit/Git/Value/MergeTargetCandidateBranchesTest.php
@@ -159,6 +159,53 @@ public function testWillComputeFutureReleaseBranchFromCurrentRelease(): void
         );
     }
 
+    public function testWillIgnoreNewMajorBranchesWhenComputingFutureReleaseBranchName(): void
+    {
+        $branches = MergeTargetCandidateBranches::fromAllBranches(
+            BranchName::fromName('2.0.x'),
+            BranchName::fromName('1.1.x'),
+            BranchName::fromName('1.4.x'),
+            BranchName::fromName('1.2.x'),
+        );
+
+        self::assertEquals(
+            BranchName::fromName('1.4.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.0.0')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.4.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.1.0')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.4.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.1.1')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.4.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.2.0')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.4.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.3.0')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.4.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.3.1')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.5.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.4.0')),
+        );
+        self::assertEquals(
+            BranchName::fromName('1.6.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('1.5.0')),
+        );
+        self::assertEquals(
+            BranchName::fromName('2.1.x'),
+            $branches->newestFutureReleaseBranchAfter(SemVerVersion::fromMilestoneName('2.0.0')),
+        );
+    }
+
     public function testWillIgnoreMasterBranchWhenComputingFutureReleaseBranchName(): void
     {
         $branches = MergeTargetCandidateBranches::fromAllBranches(