diff --git a/package-lock.json b/package-lock.json
index 59665fa..0ec5c18 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -41,7 +41,7 @@
         "sass": "^1.57.1",
         "storybook": "^7.6.14",
         "style-dictionary": "^3.7.2",
-        "typescript": "^4.9.4",
+        "typescript": "^5.3.3",
         "webpack": "^5.75.0"
       },
       "peerDependencies": {
@@ -15984,16 +15984,16 @@
       "dev": true
     },
     "node_modules/typescript": {
-      "version": "4.9.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz",
-      "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==",
+      "version": "5.3.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
+      "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
     "node_modules/ufo": {
@@ -28591,9 +28591,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "4.9.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.4.tgz",
-      "integrity": "sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==",
+      "version": "5.3.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.3.3.tgz",
+      "integrity": "sha512-pXWcraxM0uxAS+tN0AG/BF2TyqmHO014Z070UsJ+pFvYuRSq8KH8DmWpnbXe0pEPDHXZV3FcAbJkijJ5oNEnWw==",
       "dev": true
     },
     "ufo": {
diff --git a/package.json b/package.json
index ec1642b..0e433cc 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
     "sass": "^1.57.1",
     "storybook": "^7.6.14",
     "style-dictionary": "^3.7.2",
-    "typescript": "^4.9.4",
+    "typescript": "^5.3.3",
     "webpack": "^5.75.0"
   },
   "peerDependencies": {
diff --git a/src/TokenEditor.tsx b/src/TokenEditor.tsx
index ef777f2..d199c94 100644
--- a/src/TokenEditor.tsx
+++ b/src/TokenEditor.tsx
@@ -69,22 +69,21 @@ const reducer = (state: TokenEditorState, action: ReducerAction): TokenEditorSta
 };
 
 const toStyleDictValues = (values: ValueMap): StyleDictValueMap => {
-  let styleDictValues = {} satisfies StyleDictValueMap;
+  let styleDictValues: StyleDictValueMap = {};
 
   values.forEach((value, tokenPathBits) => {
     if (value === '') return;
 
-    let parent = styleDictValues;
-
     // deep assign for each bit in tokenPathBits
+    let parent = styleDictValues;
     for (const bit of tokenPathBits) {
       if (!parent[bit]) {
         parent[bit] = {};
       }
-      parent = parent[bit];
+      // a lie for the last iteration, but we correct it later
+      parent = parent[bit] as StyleDictValueMap;
     }
-
-    (parent as StyleDictValue).value = value;
+    (parent as unknown as StyleDictValue).value = value;
   });
 
   return styleDictValues;
diff --git a/src/TokenFilter.tsx b/src/TokenFilter.tsx
index 564e1c4..e48ad16 100644
--- a/src/TokenFilter.tsx
+++ b/src/TokenFilter.tsx
@@ -102,7 +102,7 @@ export const applyFilters = (
 ): DesignTokenContainer => {
   if (!filterEnabled) return container;
 
-  const filteredContainer = {};
+  const filteredContainer: TopLevelContainer = {};
   Object.entries(container).forEach(([key, nested]) => {
     if (key === '$extensions') {
       filteredContainer[key] = nested;
diff --git a/tsconfig.json b/tsconfig.json
index 1c425ed..6d419e7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -14,7 +14,6 @@
     "noImplicitThis": true,
     "noImplicitAny": true,
     "strictNullChecks": true,
-    "suppressImplicitAnyIndexErrors": true,
     "allowSyntheticDefaultImports": true
   },
   "include": ["src"],