diff --git a/package-lock.json b/package-lock.json
index b980d03..541d7ce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "Apache-2.0",
       "dependencies": {
         "axios": "^1.6.2",
-        "mime-types": "^2.1.35",
+        "form-data": "^4.0.0",
         "mustache": "^4.2.0",
         "uuid": "^9.0.1"
       },
@@ -19,7 +19,6 @@
         "@jest/types": "^29.6.3",
         "@trivago/prettier-plugin-sort-imports": "^4.2.0",
         "@types/jest": "^29.5.11",
-        "@types/mime-types": "^2.1.4",
         "@types/mustache": "^4.2.5",
         "@types/uuid": "^9.0.7",
         "@typescript-eslint/eslint-plugin": "^6.0.0",
@@ -5750,12 +5749,6 @@
       "integrity": "sha512-MqTGEo5bj5t157U6fA/BiDynNkn0YknVdh48CMPkTSpFTVmvao5UQmm7uEF6xBEo7qIMAlY/JSleYaE6VOdpaA==",
       "devOptional": true
     },
-    "node_modules/@types/mime-types": {
-      "version": "2.1.4",
-      "resolved": "https://registry.npmjs.org/@types/mime-types/-/mime-types-2.1.4.tgz",
-      "integrity": "sha512-lfU4b34HOri+kAY5UheuFMWPDOI+OPceBSHZKp69gEyTL/mmJ4cnU6Y/rlme3UL3GyOn6Y42hyIEw0/q8sWx5w==",
-      "dev": true
-    },
     "node_modules/@types/mustache": {
       "version": "4.2.5",
       "resolved": "https://registry.npmjs.org/@types/mustache/-/mustache-4.2.5.tgz",
diff --git a/package.json b/package.json
index a99b60c..a7bcaa6 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,6 @@
     "@jest/types": "^29.6.3",
     "@trivago/prettier-plugin-sort-imports": "^4.2.0",
     "@types/jest": "^29.5.11",
-    "@types/mime-types": "^2.1.4",
     "@types/mustache": "^4.2.5",
     "@types/uuid": "^9.0.7",
     "@typescript-eslint/eslint-plugin": "^6.0.0",
@@ -53,7 +52,7 @@
   },
   "dependencies": {
     "axios": "^1.6.2",
-    "mime-types": "^2.1.35",
+    "form-data": "^4.0.0",
     "mustache": "^4.2.0",
     "uuid": "^9.0.1"
   },
diff --git a/src/openai.ts b/src/openai.ts
index 5f2ca19..359c135 100644
--- a/src/openai.ts
+++ b/src/openai.ts
@@ -108,6 +108,7 @@ class OpenAIAssistantSyncer {
       : null;
     const toolCall = (runStep.step_details as ToolCallsStepDetails)
       .tool_calls[0];
+
     // @ts-expect-error "retrieval" is not in the type
     const type = toolCall.type === 'retrieval' ? 'retrieval' : 'tool';
     let input = {};