diff --git a/pkgs/by-name/pd/pdf2djvu/package.nix b/pkgs/by-name/pd/pdf2djvu/package.nix
index e92663ad2239..2d617b6664f6 100644
--- a/pkgs/by-name/pd/pdf2djvu/package.nix
+++ b/pkgs/by-name/pd/pdf2djvu/package.nix
@@ -56,9 +56,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  # Required by Poppler on darwin
-  # https://github.com/jwilk/pdf2djvu/commit/373e065faf2f0d868a3700788d20a96e9528bb12
-  CXXFLAGS = "-std=c++17";
+  # Required by Poppler
+  CXXFLAGS = "-std=c++20";
 
   meta = with lib; {
     description = "Creates djvu files from PDF files";