diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix b/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
index 048621e7d083..66b929b8df57 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
@@ -710,9 +710,9 @@
   };
 
   pgn = {
-    version = "1.4.2";
+    version = "1.4.3";
     url = "github:rolandwalker/tree-sitter-pgn";
-    hash = "sha256-pGUSsmm+YUvfvt5c4tPs6tmEcFh3DZoDtVf+EpFhOo0=";
+    hash = "sha256-7N0irNJt/tiKywUSZAIVt/E1urNXDMG+hYvu+EPpfXA=";
     meta = {
       license = lib.licenses.bsd2;
     };