diff --git a/package.json b/package.json
index 4017a2a..a9a8bb7 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "ramda": "^0.26.1"
   },
   "peerDependencies": {
-    "debug": "2.x"
+    "debug": "^2.6.9"
   },
   "devDependencies": {
     "chai": "^3.5.0",