diff --git a/pkgs/os-specific/linux/kernel/htmldocs.nix b/pkgs/os-specific/linux/kernel/htmldocs.nix
index ba641347c839..dad377db06ab 100644
--- a/pkgs/os-specific/linux/kernel/htmldocs.nix
+++ b/pkgs/os-specific/linux/kernel/htmldocs.nix
@@ -18,7 +18,8 @@ stdenv.mkDerivation {
   postPatch = ''
     patchShebangs \
       Documentation/sphinx/parse-headers.pl \
-      scripts/{get_abi.pl,get_feat.pl,kernel-doc,sphinx-pre-install}
+      scripts/{get_abi.pl,get_feat.pl,kernel-doc,sphinx-pre-install} \
+      tools/net/ynl/ynl-gen-rst.py
   '';
 
   FONTCONFIG_FILE = makeFontsConf {
@@ -31,6 +32,7 @@ stdenv.mkDerivation {
     perl
     python3.pkgs.sphinx
     python3.pkgs.sphinx-rtd-theme
+    python3.pkgs.pyyaml
     which
   ];