diff --git a/api.planx.uk/modules/file/service/uploadFile.ts b/api.planx.uk/modules/file/service/uploadFile.ts
index f1ec699c82..1026ce1d20 100644
--- a/api.planx.uk/modules/file/service/uploadFile.ts
+++ b/api.planx.uk/modules/file/service/uploadFile.ts
@@ -1,6 +1,6 @@
 import S3 from "aws-sdk/clients/s3";
 import { customAlphabet } from "nanoid";
-import { getType } from "mime";
+import mime from "mime";
 import { s3Factory } from "./utils";
 import { isLiveEnv } from "../../../helpers";
 const nanoid = customAlphabet("1234567890abcdefghijklmnopqrstuvwxyz", 8);
@@ -64,7 +64,7 @@ export function generateFileParams(
   fileType: string | null;
   key: string;
 } {
-  const fileType = getType(filename);
+  const fileType = mime.getType(filename);
   const key = `${nanoid()}/${filename}`;
 
   const params = {
diff --git a/api.planx.uk/package.json b/api.planx.uk/package.json
index d62555af31..96c2bb72e9 100644
--- a/api.planx.uk/package.json
+++ b/api.planx.uk/package.json
@@ -34,7 +34,7 @@
     "jsondiffpatch": "^0.5.0",
     "jsonwebtoken": "^9.0.2",
     "lodash": "^4.17.21",
-    "mime": "^3.0.0",
+    "mime": "^4.0.1",
     "multer": "^1.4.5-lts.1",
     "nanoid": "^3.3.7",
     "notifications-node-client": "^8.0.0",
@@ -83,7 +83,7 @@
     "@types/jsdom": "^21.1.6",
     "@types/jsonwebtoken": "^9.0.5",
     "@types/lodash": "^4.17.0",
-    "@types/mime": "^3.0.4",
+    "@types/mime": "^4.0.0",
     "@types/multer": "^1.4.11",
     "@types/node": "^18.19.13",
     "@types/passport": "^1.0.16",
diff --git a/api.planx.uk/pnpm-lock.yaml b/api.planx.uk/pnpm-lock.yaml
index 8167033f15..6738125df6 100644
--- a/api.planx.uk/pnpm-lock.yaml
+++ b/api.planx.uk/pnpm-lock.yaml
@@ -102,8 +102,8 @@ dependencies:
     specifier: ^4.17.21
     version: 4.17.21
   mime:
-    specifier: ^3.0.0
-    version: 3.0.0
+    specifier: ^4.0.1
+    version: 4.0.1
   multer:
     specifier: ^1.4.5-lts.1
     version: 1.4.5-lts.1
@@ -188,8 +188,8 @@ devDependencies:
     specifier: ^4.17.0
     version: 4.17.0
   '@types/mime':
-    specifier: ^3.0.4
-    version: 3.0.4
+    specifier: ^4.0.0
+    version: 4.0.0
   '@types/multer':
     specifier: ^1.4.11
     version: 1.4.11
@@ -2010,6 +2010,13 @@ packages:
   /@types/mime@3.0.4:
     resolution: {integrity: sha512-iJt33IQnVRkqeqC7PzBHPTC6fDlRNRW8vjrgqtScAhrmMwe8c4Eo7+fUGTa+XdWrpEgpyKWMYmi2dIwMAYRzPw==}
 
+  /@types/mime@4.0.0:
+    resolution: {integrity: sha512-5eEkJZ/BLvTE3vXGKkWlyTSUVZuzj23Wj8PoyOq2lt5I3CYbiLBOPb3XmCW6QcuOibIUE6emHXHt9E/F/rCa6w==}
+    deprecated: This is a stub types definition. mime provides its own type definitions, so you do not need this installed.
+    dependencies:
+      mime: 3.0.0
+    dev: true
+
   /@types/minimatch@5.1.2:
     resolution: {integrity: sha512-K0VQKziLUWkVKiRVrx4a40iPaxTUefQmjtkQofBkYRcoaaL/8rhwDWww9qWbrgicNOgnpIsMxyNIUM4+n6dUIA==}
     dev: false
@@ -6140,6 +6147,12 @@ packages:
     resolution: {integrity: sha512-jSCU7/VB1loIWBZe14aEYHU/+1UMEHoaO7qxCOVJOw9GgH72VAWppxNcjU+x9a2k3GSIBXNKxXQFqRvvZ7vr3A==}
     engines: {node: '>=10.0.0'}
     hasBin: true
+    dev: true
+
+  /mime@4.0.1:
+    resolution: {integrity: sha512-5lZ5tyrIfliMXzFtkYyekWbtRXObT9OWa8IwQ5uxTBDHucNNwniRqo0yInflj+iYi5CBa6qxadGzGarDfuEOxA==}
+    engines: {node: '>=16'}
+    hasBin: true
     dev: false
 
   /mimic-fn@2.1.0: