diff --git a/pkgs/applications/science/math/readstat/default.nix b/pkgs/applications/science/math/readstat/default.nix
index 51ee824b6ff1..7621c2dfdff7 100644
--- a/pkgs/applications/science/math/readstat/default.nix
+++ b/pkgs/applications/science/math/readstat/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config }:
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, libiconv }:
 
 stdenv.mkDerivation rec {
   name = "readstat";
@@ -13,6 +13,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkg-config autoreconfHook ];
 
+  buildInputs = lib.optionals (stdenv.isDarwin && stdenv.isx86_64)  [ libiconv ];
+
   meta = {
     homepage = "https://github.com/WizardMac/ReadStat";
     description = "Command-line tool (+ C library) for converting SAS, Stata, and SPSS files";
diff --git a/pkgs/development/python-modules/pyreadstat/default.nix b/pkgs/development/python-modules/pyreadstat/default.nix
index 4992d260471c..c6197fcd7448 100644
--- a/pkgs/development/python-modules/pyreadstat/default.nix
+++ b/pkgs/development/python-modules/pyreadstat/default.nix
@@ -1,7 +1,9 @@
 { lib
+, stdenv
 , buildPythonPackage
 , cython
 , fetchFromGitHub
+, libiconv
 , pandas
 , python
 , pythonOlder
@@ -29,6 +31,8 @@ buildPythonPackage rec {
 
   buildInputs = [
     zlib
+  ] ++ lib.optionals stdenv.isDarwin [
+    libiconv
   ];
 
   propagatedBuildInputs = [
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 7ebca4b24c28..17640d5909cb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10744,7 +10744,9 @@ with pkgs;
 
   read-edid = callPackage ../os-specific/linux/read-edid { };
 
-  readstat = callPackage ../applications/science/math/readstat { };
+  readstat = callPackage ../applications/science/math/readstat {
+    inherit (pkgs.darwin) libiconv;
+  };
 
   redir = callPackage ../tools/networking/redir { };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 320b9b2f03a4..088e49d7c54e 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8493,7 +8493,9 @@ in {
 
   pyramid_multiauth = callPackage ../development/python-modules/pyramid_multiauth { };
 
-  pyreadstat = callPackage ../development/python-modules/pyreadstat { };
+  pyreadstat = callPackage ../development/python-modules/pyreadstat {
+    inherit (pkgs.darwin) libiconv;
+  };
 
   pyrealsense2 = toPythonModule (pkgs.librealsense.override {
     enablePython = true;