diff --git a/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix b/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix
index 166df83b63f7..6f41f2826b2d 100644
--- a/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix
+++ b/pkgs/tools/graphics/wkhtmltopdf-bin/default.nix
@@ -33,8 +33,10 @@ let
     '';
 
     installPhase = ''
+      runHook preInstall
       mkdir -p $out
       cp -r bin include lib share $out/
+      runHook postInstall
     '';
   };
 
@@ -64,8 +66,10 @@ let
     unpackPhase = "tar -xf $src";
 
     installPhase = ''
+      runHook preInstall
       mkdir -p $out
       cp -r usr/bin usr/include usr/lib usr/share $out/
+      runHook postInstall
     '';
   };
 in