diff --git a/package.json b/package.json
index 1d5da18..e218d98 100644
--- a/package.json
+++ b/package.json
@@ -25,13 +25,13 @@
   },
   "homepage": "https://github.com/tooolbox/node-potrace#readme",
   "dependencies": {
-    "jimp": "^0.2.24"
+    "jimp": "^0.6.4"
   },
   "devDependencies": {
-    "lodash": "^4.15.0",
-    "mocha": "^3.0.2",
-    "should": "^11.1.0",
-    "should-sinon": "0.0.5",
-    "sinon": "^1.17.5"
+    "lodash": "^4.17.11",
+    "mocha": "^6.1.4",
+    "should": "^13.2.3",
+    "should-sinon": "0.0.6",
+    "sinon": "^7.3.2"
   }
 }