diff --git a/pkgs/applications/radio/fldigi/default.nix b/pkgs/applications/radio/fldigi/default.nix
index b49fea2ef68d..99a47f15b7f2 100644
--- a/pkgs/applications/radio/fldigi/default.nix
+++ b/pkgs/applications/radio/fldigi/default.nix
@@ -19,11 +19,11 @@
 
 stdenv.mkDerivation rec {
   pname = "fldigi";
-  version = "4.2.09";
+  version = "4.2.11";
 
   src = fetchurl {
     url = "mirror://sourceforge/${pname}/${pname}-${version}.tar.gz";
-    hash = "sha256-L+gj4DQyEOhPYAgOQuMtKf9RLzHJ4ACUHvGJcXDiLDc=";
+    hash = "sha256-dis3D/6crnc6KgO1EtC3JC5+kEB8EdWrvS0xrmUBZk8=";
   };
 
   nativeBuildInputs = [ pkg-config ];
@@ -45,7 +45,14 @@ stdenv.mkDerivation rec {
     udev
   ];
 
-  env.CXXFLAGS = lib.optionalString stdenv.cc.isClang "-std=c++14";
+  env.CXXFLAGS = lib.concatStringsSep " " (
+    lib.optionals stdenv.cc.isClang [
+      "-std=c++14"
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      "-Wno-error=unguarded-availability"
+    ]
+  );
 
   enableParallelBuilding = true;