diff --git a/nix/dev-shell.nix b/nix/dev-shell.nix
--- a/nix/dev-shell.nix
+++ b/nix/dev-shell.nix
@@ -8,6 +8,7 @@
 , cmake
 , cryptopp
 , darwin
+, fbjni
 , folly
 , fmt
 , grpc
@@ -59,6 +60,7 @@
 
   # include any libraries buildInputs
   buildInputs = [
+    fbjni # android builds
     protobuf_3_15_cmake # exposes both a library and a command, thus should appear in both inputs
     folly # cpp tools
     fmt # needed for folly
diff --git a/nix/fbjni.nix b/nix/fbjni.nix
new file mode 100644
--- /dev/null
+++ b/nix/fbjni.nix
@@ -0,0 +1,43 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, openjdk
+, gtest
+}:
+
+stdenv.mkDerivation rec {
+  pname = "fbjni";
+  version = "0.3.0";
+
+  src = fetchFromGitHub {
+    owner = "facebookincubator";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "132s9c8vlx1r4zcjjsgii9n3f2fx5qxgj3yvg6hw0dzg61x07bpg";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    openjdk
+  ];
+
+  buildInputs = [
+    gtest
+  ];
+
+  cmakeFlags = [
+    "-DJAVA_HOME=${openjdk.passthru.home}"
+  ];
+
+  # They install the target export in the wrong directory
+  postInstall = ''
+    mv $out/share/cmake $out/lib/cmake
+  '';
+
+  meta = with lib; {
+    description = "A library designed to simplify the usage of the Java Native Interface";
+    homepage = "https://github.com/facebookincubator/fbjni";
+    license = licenses.asl20;
+  };
+}
diff --git a/nix/overlay.nix b/nix/overlay.nix
--- a/nix/overlay.nix
+++ b/nix/overlay.nix
@@ -38,4 +38,6 @@
         ''${!outputDev}/include/olm
     '';
   });
+
+  fbjni = prev.callPackage ./fbjni.nix { };
 }