diff --git a/src/ComposerProcessor/OpenVersionsComposerProcessor.php b/src/ComposerProcessor/OpenVersionsComposerProcessor.php
index ba09441..ab7356e 100644
--- a/src/ComposerProcessor/OpenVersionsComposerProcessor.php
+++ b/src/ComposerProcessor/OpenVersionsComposerProcessor.php
@@ -34,8 +34,7 @@ public function process(
         foreach ($outdatedPackages as $outdatedPackage) {
             $composerVersion = $outdatedPackage->getComposerVersion();
 
-            // already filled with open version
-            if (str_contains($composerVersion, '|')) {
+            if ($this->skipExistingVersion($composerVersion)) {
                 continue;
             }
 
@@ -64,4 +63,14 @@ public function process(
 
         return new ChangedPackageVersionsResult($composerJsonContents, $openedPackages);
     }
+
+    private function skipExistingVersion(string $composerVersion): bool
+    {
+        // already filled with open version
+        if (str_contains($composerVersion, '|')) {
+            return true;
+        }
+
+        return str_contains($composerVersion, 'dev-');
+    }
 }
diff --git a/tests/ComposerProcessor/OpenVersionsComposerProcessor/Fixture/skip-dev.json b/tests/ComposerProcessor/OpenVersionsComposerProcessor/Fixture/skip-dev.json
new file mode 100644
index 0000000..5886836
--- /dev/null
+++ b/tests/ComposerProcessor/OpenVersionsComposerProcessor/Fixture/skip-dev.json
@@ -0,0 +1,5 @@
+{
+    "require": {
+        "symfony/console": "dev-test"
+    }
+}
diff --git a/tests/ComposerProcessor/OpenVersionsComposerProcessor/OpenVersionsComposerProcessorTest.php b/tests/ComposerProcessor/OpenVersionsComposerProcessor/OpenVersionsComposerProcessorTest.php
index 05cf381..0363d5e 100644
--- a/tests/ComposerProcessor/OpenVersionsComposerProcessor/OpenVersionsComposerProcessorTest.php
+++ b/tests/ComposerProcessor/OpenVersionsComposerProcessor/OpenVersionsComposerProcessorTest.php
@@ -49,4 +49,23 @@ public function test(): void
             $changedPackageVersionsResult->getComposerJsonContents()
         );
     }
+
+    public function testSkipDev(): void
+    {
+        $composerJsonContents = FileSystem::read(__DIR__ . '/Fixture/skip-dev.json');
+
+        $outdatedComposer = new OutdatedComposer([
+            new OutdatedPackage('symfony/console', '5.4.0', 'dev-main', true, '6.4.0', '1 year'),
+        ]);
+
+        $changedPackageVersionsResult = $this->openVersionsComposerProcessor->process(
+            $composerJsonContents,
+            $outdatedComposer,
+            10,
+            false,
+            null
+        );
+
+        $this->assertEmpty($changedPackageVersionsResult->getChangedPackageVersions());
+    }
 }