diff --git a/package.json b/package.json
index 7a0f3e0..bb19daf 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "@angular/platform-browser": "^7.0.4",
     "@angular/platform-browser-dynamic": "^7.0.4",
     "@angular/router": "^7.0.4",
-    "c3": "^0.6.8",
+    "c3": "^0.4.18",
     "core-js": "^2.5.7",
     "ngx-base": "^4.0.0",
     "ngx-bootstrap": "^3.1.1",