diff --git a/package-lock.json b/package-lock.json
index 77a7788500d..e35fdd6ddb3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -55,7 +55,7 @@
         "jsdoc": "3.6.11",
         "json": "^9.0.4",
         "pngjs": "3.4.0",
-        "scratch-blocks": "1.1.210",
+        "scratch-blocks": "2.0.0",
         "scratch-l10n": "5.0.230",
         "scratch-render-fonts": "1.0.190",
         "scratch-semantic-release-config": "3.0.0",
@@ -1613,6 +1613,48 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@blockly/continuous-toolbox": {
+      "version": "7.0.8",
+      "resolved": "https://registry.npmjs.org/@blockly/continuous-toolbox/-/continuous-toolbox-7.0.8.tgz",
+      "integrity": "sha512-6GnheXs+FWlLu44dvelKrDWDh913sTNAstCfLVl/bnvS/zSEaLyIthDyN6gZ2yizDWJnLdYAGfoGib2AW6uTJQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=8.17.0"
+      },
+      "peerDependencies": {
+        "blockly": "^12.0.0"
+      }
+    },
+    "node_modules/@blockly/field-colour": {
+      "version": "6.0.11",
+      "resolved": "https://registry.npmjs.org/@blockly/field-colour/-/field-colour-6.0.11.tgz",
+      "integrity": "sha512-UUTwH3DMt1RslKWQIGAlN5cvGynoQ9mpWPKJGI4erG92wAQWKsLAh5ldVsv9TxO2EfNwpSmQ0/5JqTdSMMqdfA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@blockly/field-grid-dropdown": "^6.0.9"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      },
+      "peerDependencies": {
+        "blockly": "^12.0.0"
+      }
+    },
+    "node_modules/@blockly/field-grid-dropdown": {
+      "version": "6.0.9",
+      "resolved": "https://registry.npmjs.org/@blockly/field-grid-dropdown/-/field-grid-dropdown-6.0.9.tgz",
+      "integrity": "sha512-YuPdS7ZhJKoVagPxbEwUPr5Gq14SnqNk6XD064mYGiH1OYO7LrtljESXG6cnnvQjhKkitiRjZ1ye20MzG3I6FQ==",
+      "dev": true,
+      "license": "Apache 2.0",
+      "engines": {
+        "node": ">=8.17.0"
+      },
+      "peerDependencies": {
+        "blockly": "^12.0.0"
+      }
+    },
     "node_modules/@colors/colors": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/@colors/colors/-/colors-1.5.0.tgz",
@@ -4441,6 +4483,19 @@
         "safe-buffer": "~5.1.0"
       }
     },
+    "node_modules/blockly": {
+      "version": "12.4.1",
+      "resolved": "https://registry.npmjs.org/blockly/-/blockly-12.4.1.tgz",
+      "integrity": "sha512-OEF0r8cFMGDkQbX+PWTjifWTe9xi2QzpZS4rO2lYeQhZDWW3/eInklLSdoxAyEQCdfJhQqMTpBct13oDoc0GVQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "jsdom": "26.1.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/bluebird": {
       "version": "3.7.2",
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
@@ -8278,30 +8333,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/exports-loader": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/exports-loader/-/exports-loader-0.7.0.tgz",
-      "integrity": "sha512-RKwCrO4A6IiKm0pG3c9V46JxIHcDplwwGJn6+JJ1RcVnh/WSGJa0xkmk5cRVtgOPzCAtTMGj2F7nluh9L0vpSA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "loader-utils": "^1.1.0",
-        "source-map": "0.5.0"
-      },
-      "engines": {
-        "node": ">= 4"
-      }
-    },
-    "node_modules/exports-loader/node_modules/source-map": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.0.tgz",
-      "integrity": "sha512-gjGnxNN0K+/Pr4Mi4fs/pOtda10dKB6Wn9QvjOrH6v5TWsI7ghHuJUHoIgyM6DkUL5kr2GtPFGererzKpMBWfA==",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/expose-loader": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/expose-loader/-/expose-loader-1.0.3.tgz",
@@ -10416,13 +10447,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/google-closure-library": {
-      "version": "20190301.0.0",
-      "resolved": "https://registry.npmjs.org/google-closure-library/-/google-closure-library-20190301.0.0.tgz",
-      "integrity": "sha512-mpeszbnXpRhXZ0sPqUxBgUmk0RtmzrJRy3KFygp0Ih9JuRUjQTCLhwYQeIlK2vB2lShhY/KUo9E1Z1gvxDFxOQ==",
-      "dev": true,
-      "license": "Apache-2.0"
-    },
     "node_modules/gopd": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.2.0.tgz",
@@ -11491,30 +11515,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/imports-loader": {
-      "version": "0.8.0",
-      "resolved": "https://registry.npmjs.org/imports-loader/-/imports-loader-0.8.0.tgz",
-      "integrity": "sha512-kXWL7Scp8KQ4552ZcdVTeaQCZSLW+e6nJfp3cwUMB673T7Hr98Xjx5JK+ql7ADlJUvj1JS5O01RLbKoutN5QDQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "loader-utils": "^1.0.2",
-        "source-map": "^0.6.1"
-      },
-      "engines": {
-        "node": ">= 4"
-      }
-    },
-    "node_modules/imports-loader/node_modules/source-map": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/imurmurhash": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/imurmurhash/-/imurmurhash-0.1.4.tgz",
@@ -20028,45 +20028,15 @@
       }
     },
     "node_modules/scratch-blocks": {
-      "version": "1.1.210",
-      "resolved": "https://registry.npmjs.org/scratch-blocks/-/scratch-blocks-1.1.210.tgz",
-      "integrity": "sha512-GE6FOICc/26+UyqogOjvKoS+tNgQe1TTC0QJuBs/0B1XeTICBa0eAJx2kgQPgAtYoETiTIJu8CJ56bl1qyyu9g==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "dependencies": {
-        "exports-loader": "^0.7.0",
-        "google-closure-library": "^20190301.0.0",
-        "imports-loader": "^0.8.0",
-        "scratch-l10n": "^3.18.3"
-      }
-    },
-    "node_modules/scratch-blocks/node_modules/@transifex/api": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/@transifex/api/-/api-4.3.0.tgz",
-      "integrity": "sha512-RCpqAqxZlrHDo7rfam8tLSoT02wvF8LQeNRC0VZG5IGrH+wv+G6fB8PWLLHrvUuaqO6XCwkMmYlJ/X9U9TLTHw==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/scratch-blocks/-/scratch-blocks-2.0.0.tgz",
+      "integrity": "sha512-HySdHjMcHHKV13e1Kr0D8G9EeuXFgp+968fyeBmbforKfDRy9gmxeJukeEe0cO7p6xb4tU7gRe5Dc9yda0zFjg==",
       "dev": true,
       "license": "Apache-2.0",
       "dependencies": {
-        "core-js": "^3.22.4"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/scratch-blocks/node_modules/scratch-l10n": {
-      "version": "3.18.357",
-      "resolved": "https://registry.npmjs.org/scratch-l10n/-/scratch-l10n-3.18.357.tgz",
-      "integrity": "sha512-Rs3YmUa2dzpYqT1O/YT15g99sIwnC7j9TOOmOhUphVKLeiYUvJWiRPKZCugA7/hbIMYZV5VLkmuDgGXhgfSOBw==",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "dependencies": {
-        "@transifex/api": "4.3.0",
-        "download": "8.0.0",
-        "transifex": "1.6.6"
-      },
-      "bin": {
-        "build-i18n-src": "scripts/build-i18n-src.js",
-        "tx-push-src": "scripts/tx-push-src.js"
+        "@blockly/continuous-toolbox": "^7.0.8",
+        "@blockly/field-colour": "^6.0.11",
+        "blockly": "^12.4.1"
       }
     },
     "node_modules/scratch-l10n": {
diff --git a/package.json b/package.json
index e01a9e4dc14..b28fdfc5bc8 100644
--- a/package.json
+++ b/package.json
@@ -99,7 +99,7 @@
     "jsdoc": "3.6.11",
     "json": "^9.0.4",
     "pngjs": "3.4.0",
-    "scratch-blocks": "1.1.210",
+    "scratch-blocks": "2.0.0",
     "scratch-l10n": "5.0.230",
     "scratch-render-fonts": "1.0.190",
     "scratch-semantic-release-config": "3.0.0",