diff --git a/pkgs/development/libraries/libtoxcore/default.nix b/pkgs/development/libraries/libtoxcore/default.nix
index 10cc499d09d6..5d97a263b880 100644
--- a/pkgs/development/libraries/libtoxcore/default.nix
+++ b/pkgs/development/libraries/libtoxcore/default.nix
@@ -53,7 +53,7 @@ in {
   };
 
   libtoxcore_0_2 = generic {
-    version = "0.2.13";
-    sha256 = "0a1cp00bnxl3q4l74yqp4aa6fg9slz4rg4lfzkl3khvmm6nzckds";
+    version = "0.2.17";
+    sha256 = "sha256-SOI6QKOSt/EK9JDrSaV6CrD5sx8aYb5ZL3StYq8u/Dg=";
   };
 }
diff --git a/pkgs/tools/networking/tuntox/default.nix b/pkgs/tools/networking/tuntox/default.nix
index 8870f0e32ce7..6df9f724500d 100644
--- a/pkgs/tools/networking/tuntox/default.nix
+++ b/pkgs/tools/networking/tuntox/default.nix
@@ -9,6 +9,7 @@
 , libsodium
 , libtoxcore
 , libvpx
+, msgpack
 , pkg-config
 , python3
 , python3Packages
@@ -27,7 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cscope git pkg-config ];
 
-  buildInputs = [ libopus libtoxcore libsodium libevent libvpx python3 ];
+  buildInputs = [ libopus libtoxcore libsodium libevent libvpx msgpack python3 ];
 
   pythonBuildInputs = with python3Packages; [
     jinja2