diff --git a/pkgs/tools/misc/tmuxp/default.nix b/pkgs/tools/misc/tmuxp/default.nix
index f718a59350a9..e6dbc49ada49 100644
--- a/pkgs/tools/misc/tmuxp/default.nix
+++ b/pkgs/tools/misc/tmuxp/default.nix
@@ -19,6 +19,7 @@ python3Packages.buildPythonApplication rec {
   propagatedBuildInputs = with python3Packages; [
     colorama
     libtmux
+    pyyaml
   ];
 
   # No tests in archive