diff --git a/pkgs/data/misc/tzdata/default.nix b/pkgs/data/misc/tzdata/default.nix
index 480535135952..1453b3899ef7 100644
--- a/pkgs/data/misc/tzdata/default.nix
+++ b/pkgs/data/misc/tzdata/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, buildPackages }:
+{ lib, stdenv, fetchurl, fetchpatch, buildPackages }:
 
 stdenv.mkDerivation rec {
   pname = "tzdata";
@@ -19,6 +19,17 @@ stdenv.mkDerivation rec {
 
   patches = lib.optionals stdenv.hostPlatform.isWindows [
     ./0001-Add-exe-extension-for-MS-Windows-binaries.patch
+  ] ++ [
+    (fetchpatch {
+      name = "fix-get-random-on-osx-1.patch";
+      url = "https://github.com/eggert/tz/commit/5db8b3ba4816ccb8f4ffeb84f05b99e87d3b1be6.patch";
+      hash = "sha256-FevGjiSahYwEjRUTvRY0Y6/jUO4YHiTlAAPixzEy5hw=";
+    })
+    (fetchpatch {
+      name = "fix-get-random-on-osx-2.patch";
+      url = "https://github.com/eggert/tz/commit/841183210311b1d4ffb4084bfde8fa8bdf3e6757.patch";
+      hash = "sha256-1tUTZBMT7V463P7eygpFS6/k5gTeeXumk5+V4gdKpEI=";
+    })
   ];
 
   outputs = [ "out" "bin" "man" "dev" ];