diff --git a/src/protocol/inputsource.rs b/src/protocol/inputsource.rs
index 654371b0d3f8704d8763ccf41fa2289d7cf2c214..362a7bb49a7ff89cfa1c6ab7783f5d6716da0f47 100644
--- a/src/protocol/inputsource.rs
+++ b/src/protocol/inputsource.rs
@@ -5,7 +5,7 @@ use std::path::Path;
 
 use backtrace::Backtrace;
 
-#[derive(Clone, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct InputSource {
     filename: String,
     input: Vec<u8>,