diff --git a/apps/server/src/services/import/mime.spec.ts b/apps/server/src/services/import/mime.spec.ts
index 5b04d0f2a..223517d32 100644
--- a/apps/server/src/services/import/mime.spec.ts
+++ b/apps/server/src/services/import/mime.spec.ts
@@ -45,6 +45,11 @@ describe("#getMime", () => {
             ["test.zip"], "application/zip"
         ],
 
+        [
+            "MP4 videos are supported",
+            ["video.mp4"], "video/mp4"
+        ],
+
         [
             "unknown MIME type not recognized by mimeTypes.lookup",
             ["test.fake"], false
diff --git a/apps/server/src/services/import/mime.ts b/apps/server/src/services/import/mime.ts
index 842e12c3e..9b9895ea9 100644
--- a/apps/server/src/services/import/mime.ts
+++ b/apps/server/src/services/import/mime.ts
@@ -71,7 +71,8 @@ const EXTENSION_TO_MIME = new Map<string, string>([
     [".ts", "text/x-typescript"],
     [".excalidraw", "application/json"],
     [".mermaid", "text/vnd.mermaid"],
-    [".mmd", "text/vnd.mermaid"]
+    [".mmd", "text/vnd.mermaid"],
+    [".mp4", "video/mp4"]   // https://github.com/jshttp/mime-types/issues/138
 ]);
 
 /** @returns false if MIME is not detected */