diff --git a/package.json b/package.json
index 12e16bb..a4698d7 100644
--- a/package.json
+++ b/package.json
@@ -29,14 +29,14 @@
     "ts-node": "^8.0.2"
   },
   "devDependencies": {
-    "@types/axios": "^0.14.0",
-    "@types/iconv": "^2.1.16",
+    "@types/axios": "0.14.0",
+    "@types/iconv": "2.1.16",
     "@types/iconv-lite": "0.0.1",
-    "@types/jest": "^24.0.11",
-    "jest": "^24.7.1",
-    "prettier": "^1.17.0",
-    "ts-jest": "^24.0.2",
-    "typescript": "^3.4.4"
+    "@types/jest": "24.0.11",
+    "jest": "24.7.1",
+    "prettier": "1.17.0",
+    "ts-jest": "24.0.2",
+    "typescript": "3.4.5"
   },
   "jest": {
     "transform": {