diff --git a/frontend/tsconfig.json b/frontend/tsconfig.json
index 843acb6..87fa979 100644
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -24,6 +24,9 @@
     ],
     "baseUrl": ".",
     "paths": {
+      "react-intl-formatted-duration": [
+        "typings/react-intl-formatted-duration"
+      ],
       "url-slug": [
         "typings/url-slug"
       ],
diff --git a/frontend/typings/react-intl-formatted-duration.d.ts b/frontend/typings/react-intl-formatted-duration.d.ts
deleted file mode 100644
index a88ccaf..0000000
--- a/frontend/typings/react-intl-formatted-duration.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-declare module 'react-intl-formatted-duration';
diff --git a/frontend/typings/react-intl-formatted-duration/index.d.ts b/frontend/typings/react-intl-formatted-duration/index.d.ts
new file mode 100644
index 0000000..a5e29c5
--- /dev/null
+++ b/frontend/typings/react-intl-formatted-duration/index.d.ts
@@ -0,0 +1,16 @@
+declare module 'react-intl-formatted-duration' {
+  export interface FormattedDurationProps {
+    seconds: number;
+    textComponent?: React.ElementType;
+    valueComponent?: React.ElementType;
+    format?: string;
+    unitDisplay?: 'long' | 'short' | 'narrow';
+  }
+
+  // eslint-disable-next-line react/prefer-stateless-function
+  class FormattedDuration extends React.Component<FormattedDurationProps> {}
+
+  static const TIMER_FORMAT: string;
+
+  export default FormattedDuration;
+}
diff --git a/frontend/typings/video.js/index.d.ts b/frontend/typings/video.js/index.d.ts
index 46a0a42..5479a24 100644
--- a/frontend/typings/video.js/index.d.ts
+++ b/frontend/typings/video.js/index.d.ts
@@ -6900,6 +6900,7 @@ export interface VideoJsPlayerOptions extends videojs.ComponentOptions {
   src?: string;
   techOrder?: string[];
   tracks?: videojs.TextTrackOptions[];
+  volume?: number;
   width?: number;
 }