diff --git a/pkgs/development/libraries/librdf/raptor2.nix b/pkgs/development/libraries/librdf/raptor2.nix
index b085e080803..4503a0cc43e 100644
--- a/pkgs/development/libraries/librdf/raptor2.nix
+++ b/pkgs/development/libraries/librdf/raptor2.nix
@@ -35,6 +35,13 @@ stdenv.mkDerivation rec {
       url = "https://github.com/dajobe/raptor/commit/fa1ef9a27d8762f5588ac2e92554a188e73dee9f.diff";
       sha256 = "sha256-zXIbrYGgC9oTpiD0WUikT4vRdc9b6bsyfnDkwUSlqao=";
     })
+    # pull upstream fix for libxml2-2.11 API compatibility:
+    #   https://github.com/dajobe/raptor/pull/58
+    (fetchpatch {
+      name = "libxml2-2.11.patch";
+      url = "https://github.com/dajobe/raptor/commit/4dbc4c1da2a033c497d84a1291c46f416a9cac51.patch";
+      hash = "sha256-fHfvncGymzMtxjwtakCNSr/Lem12UPIHAAcAac648w4=";
+    })
   ];
 
   nativeBuildInputs = [ pkg-config cmake perl bison flex ];