diff --git a/pkgs/misc/emulators/retroarch/cores.nix b/pkgs/misc/emulators/retroarch/cores.nix
index 916ca1687075..afebebbf3c06 100644
--- a/pkgs/misc/emulators/retroarch/cores.nix
+++ b/pkgs/misc/emulators/retroarch/cores.nix
@@ -230,6 +230,22 @@ in
     license = lib.licenses.gpl2Only;
   };
 
+  bsnes = mkLibRetroCore {
+    core = "bsnes";
+    version = "unstable-2021-11-22";
+    description = "Port of bsnes to libretro";
+    license = lib.licenses.gpl3Only;
+    makefile = "Makefile";
+    # https://github.com/libretro/bsnes-libretro/issues/10
+    patches = [
+      (fetchpatch {
+        name = "added-missing-GB_VERSION-define.patch";
+        url = "https://github.com/nE0sIghT/bsnes-libretro/commit/97fd8b486f9a9046277a580b238b6673a98f7f72.patch";
+        sha256 = "sha256-gCiy6sqc9sixT6Appr5ZCfHyBE2jYhPb0KvI63nfmEc=";
+      })
+    ];
+  };
+
   bsnes-mercury = mkLibRetroCore {
     core = "bsnes-mercury-accuracy";
     src = getCoreSrc "bsnes-mercury";
diff --git a/pkgs/misc/emulators/retroarch/hashes.json b/pkgs/misc/emulators/retroarch/hashes.json
index 57e97c394142..3c19ffb0603c 100644
--- a/pkgs/misc/emulators/retroarch/hashes.json
+++ b/pkgs/misc/emulators/retroarch/hashes.json
@@ -90,6 +90,13 @@
         "sha256": "ix/AyYNer1R73ZJW1reXyj7geBr3ThrqXf5Ki5yrz9A=",
         "fetchSubmodules": false
     },
+    "bsnes": {
+        "owner": "libretro",
+        "repo": "bsnes-libretro",
+        "rev": "44d97b17d06a10ae17d97a91a48e5acd10ec6db4",
+        "sha256": "VNSeTRryrX2/V38GGXTRLuDEQqDUmX2DUOHAKLxJezU=",
+        "fetchSubmodules": false
+    },
     "bsnes-mercury": {
         "owner": "libretro",
         "repo": "bsnes-mercury",
diff --git a/pkgs/misc/emulators/retroarch/update.py b/pkgs/misc/emulators/retroarch/update.py
index 96f6d9f1f615..062ff44c8008 100755
--- a/pkgs/misc/emulators/retroarch/update.py
+++ b/pkgs/misc/emulators/retroarch/update.py
@@ -23,6 +23,7 @@ CORES = {
     "beetle-vb": {"repo": "beetle-vb-libretro"},
     "beetle-wswan": {"repo": "beetle-wswan-libretro"},
     "bluemsx": {"repo": "bluemsx-libretro"},
+    "bsnes": {"repo": "bsnes-libretro"},
     "bsnes-mercury": {"repo": "bsnes-mercury"},
     "citra": {"repo": "citra", "fetch_submodules": True},
     "desmume": {"repo": "desmume"},