diff --git a/packages/react-strict-dom/src/types/renderer.web.js b/packages/react-strict-dom/src/types/renderer.web.js
index 8e175d6f..be5cc7df 100644
--- a/packages/react-strict-dom/src/types/renderer.web.js
+++ b/packages/react-strict-dom/src/types/renderer.web.js
@@ -10,5 +10,5 @@
 export type ReactDOMStyleProps = Readonly<{
   className?: string,
   'data-style-src'?: string,
-  style?: Readonly<{ [string]: string | number }>
+  style?: Readonly<{ [key: string]: string | number }>
 }>;
diff --git a/packages/react-strict-dom/src/types/styles.js b/packages/react-strict-dom/src/types/styles.js
index 0bf3f3cd..db7229d5 100644
--- a/packages/react-strict-dom/src/types/styles.js
+++ b/packages/react-strict-dom/src/types/styles.js
@@ -20,7 +20,7 @@ import typeof * as TStyleX from '@stylexjs/stylex';
 export type Style = InlineStyles;
 
 export type Styles = StyleXArray<
-  StyleXStyles<> | Theme<VarGroup<{ readonly [string]: unknown }>>
+  StyleXStyles<> | Theme<VarGroup<{ readonly [key: string]: unknown }>>
 >;
 
 export type IStyleX = Readonly<{
@@ -35,5 +35,5 @@ export type IStyleX = Readonly<{
   ...
 }>;
 
-export type MutableCustomProperties = { [string]: unknown };
+export type MutableCustomProperties = { [key: string]: unknown };
 export type CustomProperties = Readonly<MutableCustomProperties>;
diff --git a/packages/react-strict-dom/src/web/css/merge.js b/packages/react-strict-dom/src/web/css/merge.js
index 75b31505..c04815ff 100644
--- a/packages/react-strict-dom/src/web/css/merge.js
+++ b/packages/react-strict-dom/src/web/css/merge.js
@@ -26,7 +26,7 @@ type StylesArray<out T> = T | ReadonlyArray<StylesArray<T>>;
 type Props = Readonly<{
   className?: string,
   'data-style-src'?: string,
-  style?: Readonly<{ [string]: string | number }>
+  style?: Readonly<{ [key: string]: string | number }>
 }>;
 
 const optimizedStyleq = styleq.factory({