diff --git a/.gitmodules b/.gitmodules
index e6932e2..e69de29 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "nanopb/nanopb"]
-	path = nanopb/nanopb
-	url = https://github.com/nanopb/nanopb.git
diff --git a/nanopb/CMakeLists.txt b/nanopb/CMakeLists.txt
deleted file mode 100644
index 7a531d7..0000000
--- a/nanopb/CMakeLists.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-cmake_minimum_required(VERSION 3.22)
-
-set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/nanopb/extra)
-find_package(Nanopb REQUIRED)
-
-nanopb_generate_cpp(TARGET proto serverdata.proto)
-
-target_link_libraries(${CMAKE_PROJECT_NAME} proto)
diff --git a/nanopb/nanopb b/nanopb/nanopb
deleted file mode 160000
index c716db1..0000000
--- a/nanopb/nanopb
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit c716db13070bfb7de03b33f5a6558528cbf8a249
diff --git a/nanopb/serverdata.options b/nanopb/serverdata.options
deleted file mode 100644
index 77860c7..0000000
--- a/nanopb/serverdata.options
+++ /dev/null
@@ -1,2 +0,0 @@
-serverdata.v2.ServerData.unit             max_size: 15
-serverdata.v2.ServerData.values           max_count: 5
diff --git a/nanopb/serverdata.proto b/nanopb/serverdata.proto
deleted file mode 100644
index 3d74e6b..0000000
--- a/nanopb/serverdata.proto
+++ /dev/null
@@ -1,14 +0,0 @@
-syntax = "proto3";
-
-package serverdata.v2;
-
-message ServerData {
-  // ensure old type is reserved
-  reserved 1;
-  reserved "value";
-
-  string unit = 2;
-  // time since unix epoch in MICROSECONDS
-  uint64 time_us = 3;
-  repeated float values = 4;
-}