diff --git a/package.json b/package.json
index 2baa7dba84156d296e16f4dd62ca1b550997475a..e2c07d52c623ef391849944a0792d67e79826f66 100755
--- a/package.json
+++ b/package.json
@@ -16,9 +16,9 @@
     "request-promise": "4.2.0"
   },
   "devDependencies": {
-    "duniter": "1.6.x"
+    "duniter": "^1.6.21"
   },
   "peerDependencies": {
-    "duniter": "1.6.x"
+    "duniter": "^1.6.21"
   }
 }