diff --git a/README.md b/README.md
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--- a/README.md
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@@ -1,2 +1,5 @@
 # Sinhala-Country-List
 A full country list in Sinhala (Sinhala Unicode) 
+
+Based on: @kalinchernev/countries
+https://gist.github.com/kalinchernev/486393efcca01623b18d