diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index be49510a..8f23664d 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -43,6 +43,11 @@ jobs:
         with:
           name: ts_code
           path: packages/ts
+      - name: Upload C code
+        uses: actions/upload-artifact@v4
+        with:
+          name: c_code
+          path: packages/c
 
   publish-jsr:
     runs-on: ubuntu-24.04
diff --git a/.gitignore b/.gitignore
index f87222a7..d290d784 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 packages/ts/lib/*
 packages/rust/src/generated/*
 packages/rust/target
+packages/c/*
 !.gitkeep
diff --git a/buf.gen.yaml b/buf.gen.yaml
index 13060029..c0180324 100644
--- a/buf.gen.yaml
+++ b/buf.gen.yaml
@@ -8,3 +8,5 @@ plugins:
   - remote: buf.build/community/neoeinstein-prost-crate:v0.4.1
     out: packages/rust/src/generated
     opt: no_features
+  - remote: buf.build/community/nanopb:v0.4.9
+    out: packages/c