diff --git a/pkgs/tools/filesystems/s3backer/default.nix b/pkgs/tools/filesystems/s3backer/default.nix
index d0a1e0916367..bfe9f2274756 100644
--- a/pkgs/tools/filesystems/s3backer/default.nix
+++ b/pkgs/tools/filesystems/s3backer/default.nix
@@ -4,15 +4,21 @@
 
 stdenv.mkDerivation rec {
   pname = "s3backer";
-  version = "1.6.3";
+  version = "2.0.2";
 
   src = fetchFromGitHub {
-    sha256 = "sha256-DOf+kpflDd2U1nXDLKYts/yf121CrBFIBI47OQa5XBs=";
+    sha256 = "sha256-xmOtL4v3UxdjrL09sSfXyF5FoMrNerSqG9nvEuwMvNM=";
     rev = version;
     repo = "s3backer";
     owner = "archiecobbs";
   };
 
+  patches = [
+    # from upstream, after latest release
+    # https://github.com/archiecobbs/s3backer/commit/303a669356fa7cd6bc95ac7076ce51b1cab3970a
+    ./fix-darwin-builds.patch
+  ];
+
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ fuse curl expat ];
 
@@ -22,11 +28,6 @@ stdenv.mkDerivation rec {
       'AC_CHECK_DECLS(fdatasync)' ""
   '';
 
-  autoreconfPhase = ''
-    patchShebangs ./autogen.sh
-    ./autogen.sh
-  '';
-
   meta = with lib; {
     homepage = "https://github.com/archiecobbs/s3backer";
     description = "FUSE-based single file backing store via Amazon S3";
diff --git a/pkgs/tools/filesystems/s3backer/fix-darwin-builds.patch b/pkgs/tools/filesystems/s3backer/fix-darwin-builds.patch
new file mode 100644
index 000000000000..e5755f1cb9b0
--- /dev/null
+++ b/pkgs/tools/filesystems/s3backer/fix-darwin-builds.patch
@@ -0,0 +1,25 @@
+From 303a669356fa7cd6bc95ac7076ce51b1cab3970a Mon Sep 17 00:00:00 2001
+From: Adrian Ho <the.gromgit@gmail.com>
+Date: Tue, 6 Sep 2022 10:49:10 +0800
+Subject: [PATCH] Enable macOS builds
+
+macOS requires explicit `environ` declaration.
+---
+ s3backer.h | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/s3backer.h b/s3backer.h
+index ccc9053..383e246 100644
+--- a/s3backer.h
++++ b/s3backer.h
+@@ -90,6 +90,10 @@
+ #include <zlib.h>
+ #include <fuse.h>
+ 
++#ifdef __APPLE__
++extern char **environ;
++#endif
++
+ #ifndef FUSE_OPT_KEY_DISCARD
+ #define FUSE_OPT_KEY_DISCARD -4
+ #endif
\ No newline at end of file