diff --git a/.fluentci/plugin/src/lib.rs b/.fluentci/plugin/src/lib.rs
index 3acd2349d2..81fe9896f6 100644
--- a/.fluentci/plugin/src/lib.rs
+++ b/.fluentci/plugin/src/lib.rs
@@ -26,7 +26,6 @@ pub fn build(_arg: String) -> FnResult<String> {
             "wget",
             "zip",
             "unzip",
-            "protobuf-compiler",
             "cmake",
         ])?
         .with_exec(vec![
@@ -42,6 +41,25 @@ pub fn build(_arg: String) -> FnResult<String> {
         .with_exec(vec!["deno", "run", "build"])?
         .stdout()?;
 
+    // download & install protoc
+    dag()
+        .pipeline("protoc")?
+        .pkgx()?
+        .with_exec(vec![
+            "git",
+            "clone",
+            "https://github.com/protocolbuffers/protobuf",
+        ])?
+        .with_exec(vec![
+            "cd protobuf &&",
+            "git checkout v29.2 &&",
+            "git submodule update --init --recursive &&",
+            "mkdir build &&".
+            "cd build &&",
+            "cmake .. && sudo make install -j$(nproc)",
+        ])?
+        .stdout()?;
+
     dag()
         .pipeline("mkdir")?
         .pkgx()?