diff --git a/codex-rs/core/src/session/tests.rs b/codex-rs/core/src/session/tests.rs
index eae196976c..40abd4ed6f 100644
--- a/codex-rs/core/src/session/tests.rs
+++ b/codex-rs/core/src/session/tests.rs
@@ -5174,7 +5174,10 @@ impl GlobalInstructionsContributor for CountingGlobalInstructionsContributor {
     fn contribute(&self) -> GlobalInstructionsFuture<'_> {
         self.calls.fetch_add(1, Ordering::SeqCst);
         Box::pin(std::future::ready(Ok(GlobalInstructions {
-            instructions: vec![GlobalInstruction::new("refreshed instructions", None)],
+            instructions: vec![GlobalInstruction::new(
+                "refreshed instructions",
+                /*source*/ None,
+            )],
             warnings: Vec::new(),
         })))
     }
diff --git a/codex-rs/core/tests/common/test_codex.rs b/codex-rs/core/tests/common/test_codex.rs
index ea3b3b69c7..c609325055 100644
--- a/codex-rs/core/tests/common/test_codex.rs
+++ b/codex-rs/core/tests/common/test_codex.rs
@@ -246,7 +246,7 @@ impl TestGlobalInstructionsContributor {
 
     pub fn static_instructions(contents: impl Into<String>) -> Self {
         Self::new(vec![Ok(GlobalInstructions {
-            instructions: vec![GlobalInstruction::new(contents, None)],
+            instructions: vec![GlobalInstruction::new(contents, /*source*/ None)],
             warnings: Vec::new(),
         })])
     }