diff --git a/crates/nu-protocol/src/errors/parse_warning.rs b/crates/nu-protocol/src/errors/parse_warning.rs
index c5d66e46ff..78fa7ef7a9 100644
--- a/crates/nu-protocol/src/errors/parse_warning.rs
+++ b/crates/nu-protocol/src/errors/parse_warning.rs
@@ -7,6 +7,7 @@ use thiserror::Error;
 use super::ReportMode;
 
 #[derive(Clone, Debug, Error, Diagnostic, Serialize, Deserialize)]
+#[diagnostic(severity(Warning))]
 pub enum ParseWarning {
     #[error("{dep_type} deprecated.")]
     #[diagnostic(code(nu::parser::deprecated))]
diff --git a/crates/nu-protocol/src/errors/shell_error/mod.rs b/crates/nu-protocol/src/errors/shell_error/mod.rs
index bc4587286c..cc0f76d040 100644
--- a/crates/nu-protocol/src/errors/shell_error/mod.rs
+++ b/crates/nu-protocol/src/errors/shell_error/mod.rs
@@ -1220,7 +1220,7 @@ This is an internal Nushell error, please file an issue https://github.com/nushe
     },
 
     #[error("{deprecation_type} deprecated.")]
-    #[diagnostic(code(nu::shell::deprecated))]
+    #[diagnostic(code(nu::shell::deprecated), severity(Warning))]
     DeprecationWarning {
         deprecation_type: &'static str,
         suggestion: String,