diff --git a/Provide-native-lib-for-libsignal.md b/Provide-native-lib-for-libsignal.md
index 9a08c2b..1782599 100644
--- a/Provide-native-lib-for-libsignal.md
+++ b/Provide-native-lib-for-libsignal.md
@@ -11,6 +11,7 @@ You will need to install the following software:
 - JDK
 - gradle
 - rust (Guide [here](https://www.rust-lang.org/tools/install))
+- protocol buffer compiler ("apt install protobuf-compiler")
 
 Once everything is setup, navigate to the root of the libsignal-client codebase:
 ```sh