diff --git a/src/main/kotlin/net/leanix/githubagent/shared/Constants.kt b/src/main/kotlin/net/leanix/githubagent/shared/Constants.kt
index 9bbaf22..a295efb 100644
--- a/src/main/kotlin/net/leanix/githubagent/shared/Constants.kt
+++ b/src/main/kotlin/net/leanix/githubagent/shared/Constants.kt
@@ -3,7 +3,7 @@ package net.leanix.githubagent.shared
 const val TOPIC_PREFIX = "/app/ghe/"
 const val APP_NAME_TOPIC = "appName"
 const val LOGS_TOPIC = "logs"
-const val MANIFEST_FILE_NAME = "leanix.yml"
+const val MANIFEST_FILE_NAME = "leanix.yaml"
 
 val SUPPORTED_EVENT_TYPES = listOf(
     "REPOSITORY",
diff --git a/src/test/kotlin/net/leanix/githubagent/services/WebhookEventServiceTest.kt b/src/test/kotlin/net/leanix/githubagent/services/WebhookEventServiceTest.kt
index 7de900c..e1c4f5f 100644
--- a/src/test/kotlin/net/leanix/githubagent/services/WebhookEventServiceTest.kt
+++ b/src/test/kotlin/net/leanix/githubagent/services/WebhookEventServiceTest.kt
@@ -12,6 +12,8 @@ import org.springframework.beans.factory.annotation.Autowired
 import org.springframework.boot.test.context.SpringBootTest
 import org.springframework.test.context.ActiveProfiles
 
+const val UNSUPPORTED_MANIFEST_EXTENSION = "leanix.yml"
+
 @SpringBootTest
 @ActiveProfiles("test")
 class WebhookEventServiceTest {
@@ -150,6 +152,34 @@ class WebhookEventServiceTest {
         verify { webSocketService.sendMessage(any(), any<ManifestFileUpdateDto>()) }
     }
 
+    @Test
+    fun `should not send updates for unsupported yml manifest file`() {
+        val payload = """
+            {
+                "ref": "refs/heads/main",
+                "repository": {
+                    "name": "repo",
+                    "full_name": "org/repo",
+                    "default_branch": "main",
+                    "owner": {
+                        "name": "org"
+                    }
+                },
+                "head_commit": {
+                    "added": ["$UNSUPPORTED_MANIFEST_EXTENSION"],
+                    "modified": [],
+                    "removed": []
+                },
+                "installation": {
+                    "id": 1
+                }
+            }
+        """
+        webhookEventService.consumeWebhookEvent("PUSH", payload)
+
+        verify (exactly = 0) { webSocketService.sendMessage(any(), any<ManifestFileUpdateDto>()) }
+    }
+
     @Test
     fun `should handle manifest file in subdirectory`() {
         val payload = """{
@@ -233,4 +263,37 @@ class WebhookEventServiceTest {
             )
         }
     }
+
+    @Test
+    fun `should handle push event with supported YAML extension`() {
+        val payload = """{
+            "repository": {
+                "name": "repo",
+                "full_name": "owner/repo",
+                "owner": {"name": "owner"},
+                "default_branch": "main"
+            },
+            "head_commit": {
+                "added": ["custom/path/added1/leanix.yml", "custom/path/added2/$MANIFEST_FILE_NAME"],
+                "modified": [],
+                "removed": []
+            },
+            "installation": {"id": 1},
+            "ref": "refs/heads/main"
+        }"""
+
+        webhookEventService.consumeWebhookEvent("PUSH", payload)
+
+        verify(exactly = 1) {
+            webSocketService.sendMessage(
+                "/events/manifestFile",
+                ManifestFileUpdateDto(
+                    "owner/repo",
+                    ManifestFileAction.ADDED,
+                    "content",
+                    "custom/path/added2/$MANIFEST_FILE_NAME"
+                )
+            )
+        }
+    }
 }