diff --git a/BUILD.bazel b/BUILD.bazel
index cfcab30..8f0b368 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -105,6 +105,7 @@ cc_binary(
         "//lib/nlohmann_json:json",
         "//picoboot_connection",
         "//lib/littlefs",
+        "//lib/oofatfs:fatfs",
         "@libusb",
         "@pico-sdk//src/common/boot_picobin_headers",
         "@pico-sdk//src/common/boot_picoboot_headers",
diff --git a/lib/oofatfs/BUILD.bazel b/lib/oofatfs/BUILD.bazel
new file mode 100644
index 0000000..d2cc62a
--- /dev/null
+++ b/lib/oofatfs/BUILD.bazel
@@ -0,0 +1,14 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "fatfs",
+    srcs = [
+        "src/ff.c",
+    ],
+    hdrs = [
+        "src/ff.h",
+        "src/ffconf.h",
+        "src/diskio.h",
+    ],
+    includes = ["src"],
+)