diff --git a/overlay/default.nix b/overlay/default.nix
index 8eeeff24..7da6bae6 100644
--- a/overlay/default.nix
+++ b/overlay/default.nix
@@ -10,4 +10,6 @@ final: prev:
   dump1090_sdrplus = prev.callPackage ./dump1090.nix { };
 
   pi-sensors = prev.callPackage ./pi-sensors { };
+
+  hackrf = import ./hackrf.nix prev;
 }
diff --git a/overlay/hackrf.nix b/overlay/hackrf.nix
new file mode 100644
index 00000000..6902de0a
--- /dev/null
+++ b/overlay/hackrf.nix
@@ -0,0 +1,19 @@
+# TODO: remove with NixOS >= 21.11
+pkgs:
+with pkgs;
+
+hackrf.overrideAttrs (oa: rec {
+  version = "2021.03.1";
+
+  src = fetchFromGitHub {
+    owner = "greatscottgadgets";
+    repo = "hackrf";
+    rev = "v${version}";
+    sha256 = "12fkgimjy5ia291c1rn4y59pn9r5wdvz5x9z5xc8zr1xr96iyhfs";
+  };
+
+  patches = [ (fetchurl {
+    url = "https://github.com/polygon/nixpkgs/raw/b6b0cc1bea25d3495577b690371a81940ceb1e8a/pkgs/applications/radio/hackrf/0001-search-for-fftw3f.patch";
+    sha256 = "1c6q8bmcsgs6vlmr60s916b057iy8vlw8mv3mnq2hw2ssrwbzhm6";
+  }) ];
+})