diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,3 @@
 # 6.3.1
 
-- Added flag for Central European Free Trade Agreement (CEFTA)
+- Added flag for Central European Free Trade Agreement ([CEFTA](https://en.wikipedia.org/wiki/Central_European_Free_Trade_Agreement))