diff --git a/oap-formats/oap-json/oap-json-schema/src/main/java/oap/json/schema/ResourceSchemaStorage.java b/oap-formats/oap-json/oap-json-schema/src/main/java/oap/json/schema/ResourceSchemaStorage.java
index 715f76ad07..35a1c5a154 100644
--- a/oap-formats/oap-json/oap-json-schema/src/main/java/oap/json/schema/ResourceSchemaStorage.java
+++ b/oap-formats/oap-json/oap-json-schema/src/main/java/oap/json/schema/ResourceSchemaStorage.java
@@ -28,12 +28,15 @@
 import oap.io.content.ContentReader;
 import oap.json.Binder;
 import oap.util.Lists;
+import oap.util.Pair;
 import org.apache.commons.io.FilenameUtils;
 
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
+import static oap.util.Pair.__;
+
 public final class ResourceSchemaStorage implements SchemaStorage {
     public static final SchemaStorage INSTANCE = new ResourceSchemaStorage();
 
@@ -42,14 +45,18 @@ private ResourceSchemaStorage() {
 
     @Override
     public String get( String name ) {
-        String ext = FilenameUtils.getExtension( name );
         String prefix = FilenameUtils.removeExtension( name );
         String fileName = FilenameUtils.removeExtension( FilenameUtils.getName( name ) );
 
-        String conf = Resources.readOrThrow( getClass(), name, ContentReader.ofString() );
-        if( "yaml".equalsIgnoreCase( ext ) ) {
-            conf = Binder.json.marshal( Binder.yaml.unmarshal( Map.class, conf ) );
-        }
+        Pair<String, Binder> origConf =
+            Resources.read( getClass(), name + ".conf", ContentReader.ofString() ).map( str -> __( str, Binder.hoconWithoutSystemProperties ) )
+                .or( () -> Resources.read( getClass(), name + ".yaml", ContentReader.ofString() ).map( str -> __( str, Binder.yaml ) ) )
+                .or( () -> Resources.read( getClass(), name + ".json", ContentReader.ofString() ).map( str -> __( str, Binder.json ) ) )
+
+                .or( () -> Resources.read( getClass(), name, ContentReader.ofString() ).map( str -> __( str, Binder.Format.of( name, false ).binder ) ) )
+                .orElseThrow( () -> new JsonSchemaException( "resource not found " + name + "[|.conf|.json|.yaml] for context class " + getClass() ) );
+
+        String conf = Binder.json.marshal( origConf._2.unmarshal( Map.class, origConf._1 ) );
 
         List<String> extConf = Resources.readStrings( getClass(), prefix + "/" + fileName + ".conf" );
         List<String> extJson = Resources.readStrings( getClass(), prefix + "/" + fileName + ".json" );
diff --git a/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/ResourceSchemaStorageTest.java b/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/ResourceSchemaStorageTest.java
index b83c39c021..437b382558 100644
--- a/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/ResourceSchemaStorageTest.java
+++ b/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/ResourceSchemaStorageTest.java
@@ -33,41 +33,48 @@
 
 public class ResourceSchemaStorageTest {
     @Test
-    public void get() {
-        var schema = ResourceSchemaStorage.INSTANCE.get( "/schema/test-schema.conf" );
+    public void testGet() {
+        String schema = ResourceSchemaStorage.INSTANCE.get( "/schema/test-schema.conf" );
+        String schema2 = ResourceSchemaStorage.INSTANCE.get( "/schema/test-schema" );
+        String schema3 = ResourceSchemaStorage.INSTANCE.get( "/schema/test-schema2" );
 
-        assertJson( Binder.json.marshal( Binder.hoconWithoutSystemProperties.unmarshal( Map.class, schema ) ) )
-            .isEqualTo( "{"
-                + "\"type\": \"object\","
-                + "  \"properties\": {"
-                + "     \"a\": {"
-                + "       \"type\": \"string\""
-                + "    }"
-                + "  }"
-                + "}" );
+        String expected = """
+            {
+            "type": "object",
+              "properties": {
+                 "a": {
+                   "type": "string"
+                }
+              }
+            }""";
+
+        assertJson( Binder.json.marshal( Binder.hoconWithoutSystemProperties.unmarshal( Map.class, schema ) ) ).isEqualTo( expected );
+        assertJson( Binder.json.marshal( Binder.hoconWithoutSystemProperties.unmarshal( Map.class, schema2 ) ) ).isEqualTo( expected );
+        assertJson( Binder.json.marshal( Binder.hoconWithoutSystemProperties.unmarshal( Map.class, schema3 ) ) ).isEqualTo( expected );
     }
 
     @Test
-    public void getWithExtends() {
-        var schema = ResourceSchemaStorage.INSTANCE.get( "/schema/test-schema-1.conf" );
+    public void testGetWithExtends() {
+        String schema = ResourceSchemaStorage.INSTANCE.get( "/schema/test-schema-1" );
 
         assertJson( Binder.json.marshal( Binder.hoconWithoutSystemProperties.unmarshal( Map.class, schema ) ) )
-            .isEqualTo( "{"
-                + "  \"type\": \"object\","
-                + "  \"properties\": {"
-                + "    \"a\": {"
-                + "      \"type\": \"string\""
-                + "    },"
-                + "    \"b\": {"
-                + "      \"type\": \"integer\""
-                + "    },"
-                + "    \"j\": {"
-                + "      \"type\": \"integer\""
-                + "    },"
-                + "    \"y\": {"
-                + "      \"type\": \"integer\""
-                + "    }"
-                + "  }"
-                + "}" );
+            .isEqualTo( """
+                {
+                  "type": "object",
+                  "properties": {
+                    "a": {
+                      "type": "string"
+                    },
+                    "b": {
+                      "type": "integer"
+                    },
+                    "j": {
+                      "type": "integer"
+                    },
+                    "y": {
+                      "type": "integer"
+                    }
+                  }
+                }""" );
     }
 }
diff --git a/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/SchemaRefTest.java b/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/SchemaRefTest.java
index 0ed7c6d9a6..e6f14a8b3f 100644
--- a/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/SchemaRefTest.java
+++ b/oap-formats/oap-json/oap-json-schema/src/test/java/oap/json/schema/SchemaRefTest.java
@@ -49,9 +49,41 @@ public void extendsSchema() {
               }
             }""";
 
-        assertOk( schema, "{'field1': {'a': 'test'}}", url -> schema2, false );
+        assertOk( schema, "{'field1': {'a': 'test'}}", _ -> schema2, false );
         assertFailure( schema, "{'field1': {'a': 1}}",
             _ -> schema2, "/field1/a: instance type is number, but allowed type is string"
         );
     }
+
+    @Test
+    public void extendsSchemaArray() {
+        String schema = """
+            {
+              type = object
+              additionalProperties = false
+              properties {
+                list {
+                  type = array
+                  additionalProperties = false
+                  items { "$ref" = "/schema/test2" }
+                }
+              }
+            }""";
+
+        String schema2 = """
+            {
+              type = object
+              additionalProperties = false
+              properties {
+                a {
+                  type = string
+                }
+              }
+            }""";
+
+        assertOk( schema, "{'list': [{'a': 'test'}]}", _ -> schema2, false );
+        assertFailure( schema, "{'list': [{'a': 1}]}",
+            _ -> schema2, "/list/0/a: instance type is number, but allowed type is string"
+        );
+    }
 }
diff --git a/oap-formats/oap-json/oap-json-schema/src/test/resources/schema/test-schema2.yaml b/oap-formats/oap-json/oap-json-schema/src/test/resources/schema/test-schema2.yaml
new file mode 100644
index 0000000000..fa630d8663
--- /dev/null
+++ b/oap-formats/oap-json/oap-json-schema/src/test/resources/schema/test-schema2.yaml
@@ -0,0 +1,4 @@
+type: object
+properties:
+  a:
+    type: string
diff --git a/pom.xml b/pom.xml
index be10e00e88..7970ee39fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,7 +70,7 @@
     </distributionManagement>
 
     <properties>
-        <oap.project.version>22.4.11</oap.project.version>
+        <oap.project.version>22.4.12</oap.project.version>
 
         <oap.deps.config.version>21.0.0</oap.deps.config.version>
         <oap.deps.oap-teamcity.version>21.0.1</oap.deps.oap-teamcity.version>