diff --git a/examples/placeholder-demo/package-lock.json b/examples/placeholder-demo/package-lock.json
index e7e1cd3..e73735f 100644
--- a/examples/placeholder-demo/package-lock.json
+++ b/examples/placeholder-demo/package-lock.json
@@ -21,7 +21,7 @@
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-        "@ckeditor/ckeditor5-widget": "^11.0.4",
+        "@ckeditor/ckeditor5-widget": "^27.0.0",
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         "ckeditor5-placeholder": "^1.0.5",
         "core-js": "^3.0.1"
@@ -1189,6 +1189,170 @@
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+    "node_modules/@ckeditor/ckeditor5-select-all/node_modules/@ckeditor/ckeditor5-utils": {
+      "version": "27.0.0",
+      "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-utils/-/ckeditor5-utils-27.0.0.tgz",
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+    "node_modules/@ckeditor/ckeditor5-select-all/node_modules/ckeditor5": {
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+      "resolved": "https://registry.npmjs.org/ckeditor5/-/ckeditor5-27.0.0.tgz",
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+      "dependencies": {
+        "@ckeditor/ckeditor5-clipboard": "^27.0.0",
+        "@ckeditor/ckeditor5-core": "^27.0.0",
+        "@ckeditor/ckeditor5-engine": "^27.0.0",
+        "@ckeditor/ckeditor5-enter": "^27.0.0",
+        "@ckeditor/ckeditor5-paragraph": "^27.0.0",
+        "@ckeditor/ckeditor5-select-all": "^27.0.0",
+        "@ckeditor/ckeditor5-typing": "^27.0.0",
+        "@ckeditor/ckeditor5-ui": "^27.0.0",
+        "@ckeditor/ckeditor5-undo": "^27.0.0",
+        "@ckeditor/ckeditor5-upload": "^27.0.0",
+        "@ckeditor/ckeditor5-utils": "^27.0.0",
+        "@ckeditor/ckeditor5-widget": "^27.0.0"
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     "node_modules/@ckeditor/ckeditor5-theme-lark": {
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       "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-theme-lark/-/ckeditor5-theme-lark-14.1.1.tgz",
@@ -1244,6 +1408,170 @@
         "npm": ">=5.7.1"
       }
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+      "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-upload/-/ckeditor5-upload-27.0.0.tgz",
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+        "npm": ">=5.7.1"
+      }
+    },
+    "node_modules/@ckeditor/ckeditor5-upload/node_modules/@ckeditor/ckeditor5-clipboard": {
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+      "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-clipboard/-/ckeditor5-clipboard-27.0.0.tgz",
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+        "@ckeditor/ckeditor5-engine": "^27.0.0",
+        "@ckeditor/ckeditor5-enter": "^27.0.0",
+        "@ckeditor/ckeditor5-paragraph": "^27.0.0",
+        "@ckeditor/ckeditor5-select-all": "^27.0.0",
+        "@ckeditor/ckeditor5-typing": "^27.0.0",
+        "@ckeditor/ckeditor5-ui": "^27.0.0",
+        "@ckeditor/ckeditor5-undo": "^27.0.0",
+        "@ckeditor/ckeditor5-upload": "^27.0.0",
+        "@ckeditor/ckeditor5-utils": "^27.0.0",
+        "@ckeditor/ckeditor5-widget": "^27.0.0"
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@@ -1258,17 +1586,170 @@
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-        "@ckeditor/ckeditor5-ui": "^13.0.2",
-        "@ckeditor/ckeditor5-utils": "^13.0.1"
+        "@ckeditor/ckeditor5-core": "^27.0.0",
+        "@ckeditor/ckeditor5-engine": "^27.0.0",
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+        "@ckeditor/ckeditor5-typing": "^27.0.0",
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+        "@ckeditor/ckeditor5-utils": "^27.0.0",
+        "lodash-es": "^4.17.15"
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+        "npm": ">=5.7.1"
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+    "node_modules/@ckeditor/ckeditor5-widget/node_modules/@ckeditor/ckeditor5-clipboard": {
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+          "resolved": "https://registry.npmjs.org/ckeditor5/-/ckeditor5-27.0.0.tgz",
+          "integrity": "sha512-KjAjA/K5sNZ2UOaD3qxYiEv23TUdsZdNgDSMUiMjaFNv7bkoPZ4p8fEM4squzzB6VupLSjDw31WmTPF7Sf0KrA==",
+          "requires": {
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+            "@ckeditor/ckeditor5-core": "^27.0.0",
+            "@ckeditor/ckeditor5-engine": "^27.0.0",
+            "@ckeditor/ckeditor5-enter": "^27.0.0",
+            "@ckeditor/ckeditor5-paragraph": "^27.0.0",
+            "@ckeditor/ckeditor5-select-all": "^27.0.0",
+            "@ckeditor/ckeditor5-typing": "^27.0.0",
+            "@ckeditor/ckeditor5-ui": "^27.0.0",
+            "@ckeditor/ckeditor5-undo": "^27.0.0",
+            "@ckeditor/ckeditor5-upload": "^27.0.0",
+            "@ckeditor/ckeditor5-utils": "^27.0.0",
+            "@ckeditor/ckeditor5-widget": "^27.0.0"
+          }
+        }
+      }
+    },
     "@ckeditor/ckeditor5-utils": {
       "version": "13.0.1",
       "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-utils/-/ckeditor5-utils-13.0.1.tgz",
@@ -14469,14 +15194,129 @@
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-        "@ckeditor/ckeditor5-ui": "^13.0.2",
-        "@ckeditor/ckeditor5-utils": "^13.0.1"
+      "version": "27.0.0",
+      "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-widget/-/ckeditor5-widget-27.0.0.tgz",
+      "integrity": "sha512-kgu7EKO7jC4L27etNlbBpk76CKSZJqD9BgST0el+bPvF/cITItSOCVQttKgW/6peu0ROL6dWPjAhnLBjxNi3oA==",
+      "requires": {
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+        "@ckeditor/ckeditor5-engine": "^27.0.0",
+        "@ckeditor/ckeditor5-enter": "^27.0.0",
+        "@ckeditor/ckeditor5-typing": "^27.0.0",
+        "@ckeditor/ckeditor5-ui": "^27.0.0",
+        "@ckeditor/ckeditor5-utils": "^27.0.0",
+        "lodash-es": "^4.17.15"
+      },
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+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-clipboard/-/ckeditor5-clipboard-27.0.0.tgz",
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+            "@ckeditor/ckeditor5-widget": "^27.0.0",
+            "lodash-es": "^4.17.11"
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+        "@ckeditor/ckeditor5-core": {
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+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-core/-/ckeditor5-core-27.0.0.tgz",
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+            "@ckeditor/ckeditor5-ui": "^27.0.0",
+            "@ckeditor/ckeditor5-utils": "^27.0.0",
+            "lodash-es": "^4.17.15"
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+        "@ckeditor/ckeditor5-engine": {
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+            "lodash-es": "^4.17.15"
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+        "@ckeditor/ckeditor5-enter": {
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+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-enter/-/ckeditor5-enter-27.0.0.tgz",
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+        "@ckeditor/ckeditor5-paragraph": {
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+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-paragraph/-/ckeditor5-paragraph-27.0.0.tgz",
+          "integrity": "sha512-CzPSzYed4Hx7R7y8jXcaNUX0ZR8vAdPI3bNG625HaL084gA09cfLjprAEIRVXfFFYMRTUNMUrZesKCIhVS3E4w==",
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+            "@ckeditor/ckeditor5-utils": "^27.0.0"
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+        "@ckeditor/ckeditor5-typing": {
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+            "@ckeditor/ckeditor5-engine": "^27.0.0",
+            "@ckeditor/ckeditor5-utils": "^27.0.0",
+            "lodash-es": "^4.17.15"
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+        "@ckeditor/ckeditor5-ui": {
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+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-ui/-/ckeditor5-ui-27.0.0.tgz",
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+          "requires": {
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+            "ckeditor5": "^27.0.0",
+            "lodash-es": "^4.17.15"
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+        },
+        "@ckeditor/ckeditor5-undo": {
+          "version": "27.0.0",
+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-undo/-/ckeditor5-undo-27.0.0.tgz",
+          "integrity": "sha512-FLe6MnC5j0L1BQIrRa4gob8W8GxUXQ8uMG+DvLik07TpaU5PXb/CzUIJz7vZgxhbj7tKd8L9AmfcGza9g0S3kA==",
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+            "@ckeditor/ckeditor5-engine": "^27.0.0",
+            "@ckeditor/ckeditor5-ui": "^27.0.0"
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+        "@ckeditor/ckeditor5-utils": {
+          "version": "27.0.0",
+          "resolved": "https://registry.npmjs.org/@ckeditor/ckeditor5-utils/-/ckeditor5-utils-27.0.0.tgz",
+          "integrity": "sha512-GYscRP6M73og0DRASbUmelL6SHP77F7XaoI3rZrHIXA+ykOp83v9b6I/5CiJdSvB8t/oHVq/ZoJ6s6CrkVFMEQ==",
+          "requires": {
+            "lodash-es": "^4.17.15"
+          }
+        },
+        "ckeditor5": {
+          "version": "27.0.0",
+          "resolved": "https://registry.npmjs.org/ckeditor5/-/ckeditor5-27.0.0.tgz",
+          "integrity": "sha512-KjAjA/K5sNZ2UOaD3qxYiEv23TUdsZdNgDSMUiMjaFNv7bkoPZ4p8fEM4squzzB6VupLSjDw31WmTPF7Sf0KrA==",
+          "requires": {
+            "@ckeditor/ckeditor5-clipboard": "^27.0.0",
+            "@ckeditor/ckeditor5-core": "^27.0.0",
+            "@ckeditor/ckeditor5-engine": "^27.0.0",
+            "@ckeditor/ckeditor5-enter": "^27.0.0",
+            "@ckeditor/ckeditor5-paragraph": "^27.0.0",
+            "@ckeditor/ckeditor5-select-all": "^27.0.0",
+            "@ckeditor/ckeditor5-typing": "^27.0.0",
+            "@ckeditor/ckeditor5-ui": "^27.0.0",
+            "@ckeditor/ckeditor5-undo": "^27.0.0",
+            "@ckeditor/ckeditor5-upload": "^27.0.0",
+            "@ckeditor/ckeditor5-utils": "^27.0.0",
+            "@ckeditor/ckeditor5-widget": "^27.0.0"
+          }
+        }
       }
     },
     "@mrmlnc/readdir-enhanced": {
@@ -19679,9 +20519,9 @@
       "dev": true
     },
     "lodash-es": {
-      "version": "4.17.14",
-      "resolved": "https://registry.npmjs.org/lodash-es/-/lodash-es-4.17.14.tgz",
-      "integrity": "sha512-7zchRrGa8UZXjD/4ivUWP1867jDkhzTG2c/uj739utSd7O/pFFdxspCemIFKEEjErbcqRzn8nKnGsi7mvTgRPA=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash-es/-/lodash-es-4.17.21.tgz",
+      "integrity": "sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw=="
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     "lodash.memoize": {
       "version": "4.1.2",
diff --git a/examples/placeholder-demo/package.json b/examples/placeholder-demo/package.json
index c246947..1a05fbf 100644
--- a/examples/placeholder-demo/package.json
+++ b/examples/placeholder-demo/package.json
@@ -61,7 +61,7 @@
     "@ckeditor/ckeditor5-theme-lark": "^14.1.1",
     "@ckeditor/ckeditor5-ui": "^13.0.2",
     "@ckeditor/ckeditor5-utils": "^13.0.1",
-    "@ckeditor/ckeditor5-widget": "^11.0.4",
+    "@ckeditor/ckeditor5-widget": "^27.0.0",
     "chokidar": "^3.5.1",
     "ckeditor5-placeholder": "^1.0.5",
     "core-js": "^3.0.1"