diff --git a/package-lock.json b/package-lock.json
index f09ccbbb70..9bd854b546 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -34880,7 +34880,7 @@
       "license": "Apache-2.0",
       "dependencies": {
         "@babel/runtime": "^7.17.9",
-        "indigo-ketcher": "^1.23.0-dev.4",
+        "indigo-ketcher": "1.23.0-dev.4",
         "ketcher-core": "*"
       },
       "devDependencies": {
diff --git a/packages/ketcher-core/src/domain/serializers/ket/schema.json b/packages/ketcher-core/src/domain/serializers/ket/schema.json
index fb93deb2a8..71f646c756 100644
--- a/packages/ketcher-core/src/domain/serializers/ket/schema.json
+++ b/packages/ketcher-core/src/domain/serializers/ket/schema.json
@@ -790,7 +790,7 @@
         },
         "format": {
           "type": "string",
-          "pattern": "^image/(png|svg\\+xml)"
+          "pattern": "^image/(png|svg\\+xml)$"
         },
         "boundingBox": {
           "type": "object",
@@ -809,6 +809,9 @@
             },
             "y": {
               "type": "number"
+            },
+            "z": {
+              "type": "number"
             }
           }
         },