diff --git a/pkgs/development/python-modules/llama-index-readers-file/default.nix b/pkgs/development/python-modules/llama-index-readers-file/default.nix
index e02618898251..f92751824544 100644
--- a/pkgs/development/python-modules/llama-index-readers-file/default.nix
+++ b/pkgs/development/python-modules/llama-index-readers-file/default.nix
@@ -27,6 +27,7 @@ buildPythonPackage rec {
   pythonRelaxDeps = [
     "pymupdf"
     "pypdf"
+    "striprtf"
   ];
 
   build-system = [ poetry-core ];