diff --git a/pkgs/applications/science/logic/poly/default.nix b/pkgs/applications/science/logic/poly/default.nix
index c80b9bf1f0c4..7eff519375f2 100644
--- a/pkgs/applications/science/logic/poly/default.nix
+++ b/pkgs/applications/science/logic/poly/default.nix
@@ -2,23 +2,16 @@
 
 stdenv.mkDerivation rec {
   pname = "libpoly";
-  version = "0.1.10";
+  version = "0.1.11";
 
   src = fetchFromGitHub {
     owner = "SRI-CSL";
     repo = "libpoly";
     # they've pushed to the release branch, use explicit tag
     rev = "refs/tags/v${version}";
-    sha256 = "sha256-22Y4L5NFnCzKwZt0A/ChMuGPU4Dk1Qyke6mdvfN063w=";
+    sha256 = "sha256-vrYB6RQYShipZ0c0j1KcSTJR1h0rQKAAeJvODMar1GM=";
   };
 
-  # https://github.com/SRI-CSL/libpoly/pull/52
-  postPatch = lib.optionalString stdenv.isDarwin ''
-    substituteInPlace src/CMakeLists.txt --replace \
-      '"utils/open_memstream.c ''${poly_SOURCES}"' \
-      'utils/open_memstream.c ''${poly_SOURCES}'
-  '';
-
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [ gmp python3 ];