diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5b604aa6..fe1f80d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 - Added Zig syntax, see #1470 (@paulsmith)
 - Added Lean syntax, see #1446 (@Julian)
 - Added `.resource` extension for Robot Framework files, see #1386
+- Added `gnuplot` syntax, see #1431 (@sharkdp)
 
 ## New themes