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 eb0dfd430f97..1dc183b27ab5 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/grammar-sources.nix
@@ -844,6 +844,18 @@
     };
   };
 
+  readline = {
+    version = "1.1.1";
+    url = "github:tree-sitter-grammars/tree-sitter-readline";
+    hash = "sha256-cbQnAPtgMnA41CTI9OyY8WYvdlJOC9g0ZMbitNSvtmI=";
+    meta = {
+      license = lib.licenses.mit;
+      maintainers = with lib.maintainers; [
+        Stebalien
+      ];
+    };
+  };
+
   regex = {
     version = "0.25.0";
     url = "github:tree-sitter/tree-sitter-regex";