diff --git a/rust/rpc_tests.rs b/rust/rpc_tests.rs
index c10f633a..fe36d608 100644
--- a/rust/rpc_tests.rs
+++ b/rust/rpc_tests.rs
@@ -439,6 +439,7 @@ async fn test_full_conversation_flow() {
                         locations: vec![ToolCallLocation {
                             path: std::path::PathBuf::from("/test/data.txt"),
                             line: None,
+                            column: None,
                         }],
                         raw_input: None,
                         raw_output: None,
@@ -460,6 +461,7 @@ async fn test_full_conversation_flow() {
                         locations: vec![ToolCallLocation {
                             path: std::path::PathBuf::from("/test/data.txt"),
                             line: None,
+                            column: None,
                         }],
                         raw_input: None,
                         raw_output: None,
diff --git a/rust/tool_call.rs b/rust/tool_call.rs
index fbc53189..b8fa1787 100644
--- a/rust/tool_call.rs
+++ b/rust/tool_call.rs
@@ -123,4 +123,6 @@ pub struct ToolCallLocation {
     pub path: PathBuf,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub line: Option<u32>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub column: Option<u32>,
 }