diff --git a/proto/build.rs b/proto/build.rs
index dd0eb6f..41c909c 100644
--- a/proto/build.rs
+++ b/proto/build.rs
@@ -3,10 +3,17 @@ use std::env;
 fn main() {
     let version = env!("CARGO_PKG_VERSION");
 
-    env::set_var("TENDERDASH_COMMITISH", "v".to_owned() + version);
+    // check if TENDERDASH_COMMITISH is alrady set; if not, set it to the current
+    // version
+    let commitish = env::var("TENDERDASH_COMMITISH").unwrap_or_default();
+    if commitish.is_empty() {
+        env::set_var("TENDERDASH_COMMITISH", "v".to_owned() + version);
+    }
+
     tenderdash_proto_compiler::proto_compile();
 
     println!("cargo:rerun-if-changed=../proto-compiler/src");
     println!("cargo:rerun-if-changed=Cargo.toml");
     println!("cargo:rerun-if-env-changed=CARGO_PKG_VERSION");
+    println!("cargo:rerun-if-env-changed=TENDERDASH_COMMITISH");
 }
diff --git a/proto/src/prelude.rs b/proto/src/prelude.rs
index aa9a20b..74cb1a7 100644
--- a/proto/src/prelude.rs
+++ b/proto/src/prelude.rs
@@ -1,5 +1,6 @@
 // Re-export according to alloc::prelude::v1 because it is not yet stabilized
 // https://doc.rust-lang.org/src/alloc/prelude/v1.rs.html
+#[allow(unused_imports)]
 pub use alloc::{
     borrow::ToOwned,
     boxed::Box,