diff --git a/codex-rs/hooks/src/engine/discovery.rs b/codex-rs/hooks/src/engine/discovery.rs
index 186e96311b..5085b6d114 100644
--- a/codex-rs/hooks/src/engine/discovery.rs
+++ b/codex-rs/hooks/src/engine/discovery.rs
@@ -39,6 +39,7 @@ struct HookHandlerSource<'a> {
     path: &'a AbsolutePathBuf,
     key_source: String,
     source: HookSource,
+    is_managed: bool,
     hook_states: &'a HashMap<String, HookStateToml>,
     env: HashMap<String, String>,
     plugin_id: Option<String>,
@@ -95,6 +96,7 @@ pub(crate) fn discover_handlers(
                         path: &source_path,
                         key_source: source_path.display().to_string(),
                         source: hook_source,
+                        is_managed: hook_source.is_managed(),
                         hook_states: &hook_states,
                         env: HashMap::new(),
                         plugin_id: None,
@@ -146,6 +148,7 @@ fn append_managed_requirement_handlers(
             path: &source_path,
             key_source: source_path.display().to_string(),
             source: hook_source_for_requirement_source(managed_hooks.source.as_ref()),
+            is_managed: true,
             hook_states,
             env: HashMap::new(),
             plugin_id: None,
@@ -190,6 +193,7 @@ fn append_plugin_hook_sources(
                 path: &source_path,
                 key_source: format!("{plugin_id}:{source_relative_path}"),
                 source: HookSource::Plugin,
+                is_managed: false,
                 hook_states,
                 env,
                 plugin_id: Some(plugin_id),
@@ -418,13 +422,13 @@ fn append_matcher_groups(
                         handler_index
                     );
                     let state = source.hook_states.get(&key);
-                    let enabled = source.source.is_managed()
-                        || state.and_then(|state| state.enabled) != Some(false);
-                    let trusted_hash = (!source.source.is_managed())
+                    let enabled =
+                        source.is_managed || state.and_then(|state| state.enabled) != Some(false);
+                    let trusted_hash = (!source.is_managed)
                         .then(|| state.and_then(|state| state.trusted_hash.clone()))
                         .flatten();
                     let trust_status =
-                        hook_trust_status(source.source.is_managed(), &current_hash, &trusted_hash);
+                        hook_trust_status(source.is_managed, &current_hash, &trusted_hash);
                     hook_entries.push(HookListEntry {
                         key,
                         event_name,
@@ -438,7 +442,7 @@ fn append_matcher_groups(
                         plugin_id: source.plugin_id.clone(),
                         display_order: *display_order,
                         enabled,
-                        is_managed: source.source.is_managed(),
+                        is_managed: source.is_managed,
                         current_hash,
                         trusted_hash,
                         trust_status,
@@ -610,6 +614,7 @@ mod tests {
             path,
             key_source: path.display().to_string(),
             source: hook_source(),
+            is_managed: hook_source().is_managed(),
             hook_states,
             env: std::collections::HashMap::new(),
             plugin_id: None,
diff --git a/codex-rs/hooks/src/engine/mod_tests.rs b/codex-rs/hooks/src/engine/mod_tests.rs
index e01cb8f820..fd9bc1b3c4 100644
--- a/codex-rs/hooks/src/engine/mod_tests.rs
+++ b/codex-rs/hooks/src/engine/mod_tests.rs
@@ -170,6 +170,69 @@ with Path(r"{log_path}").open("a", encoding="utf-8") as handle:
     assert!(log_contents.contains("\"hook_event_name\": \"PreToolUse\""));
 }
 
+#[test]
+fn unknown_requirement_source_hooks_stay_managed() {
+    let temp = tempdir().expect("create temp dir");
+    let managed_dir =
+        AbsolutePathBuf::try_from(temp.path().join("managed-hooks")).expect("absolute path");
+    fs::create_dir_all(managed_dir.as_path()).expect("create managed hooks dir");
+    let managed_hooks = managed_hooks_for_current_platform(
+        managed_dir,
+        HookEventsToml {
+            pre_tool_use: vec![MatcherGroup {
+                matcher: Some("^Bash$".to_string()),
+                hooks: vec![HookHandlerConfig::Command {
+                    command: "python3 /tmp/managed.py".to_string(),
+                    timeout_sec: Some(10),
+                    r#async: false,
+                    status_message: Some("checking".to_string()),
+                }],
+            }],
+            ..Default::default()
+        },
+    );
+    let config_layer_stack = ConfigLayerStack::new(
+        Vec::new(),
+        ConfigRequirements {
+            managed_hooks: Some(ConstrainedWithSource::new(
+                Constrained::allow_any(managed_hooks.clone()),
+                Some(RequirementSource::Unknown),
+            )),
+            ..ConfigRequirements::default()
+        },
+        ConfigRequirementsToml {
+            hooks: Some(managed_hooks),
+            ..ConfigRequirementsToml::default()
+        },
+    )
+    .expect("config layer stack");
+
+    let engine = ClaudeHooksEngine::new(
+        /*enabled*/ true,
+        Some(&config_layer_stack),
+        Vec::new(),
+        Vec::new(),
+        CommandShell {
+            program: String::new(),
+            args: Vec::new(),
+        },
+    );
+
+    assert_eq!(engine.handlers.len(), 1);
+    assert_eq!(engine.handlers[0].source, HookSource::Unknown);
+    let discovered =
+        super::discovery::discover_handlers(Some(&config_layer_stack), Vec::new(), Vec::new());
+    assert_eq!(discovered.hook_entries.len(), 1);
+    assert_eq!(discovered.hook_entries[0].source, HookSource::Unknown);
+    assert_eq!(discovered.hook_entries[0].enabled, true);
+    assert_eq!(discovered.hook_entries[0].is_managed, true);
+    assert_eq!(discovered.hook_entries[0].trusted_hash, None);
+    assert_eq!(
+        discovered.hook_entries[0].trust_status,
+        HookTrustStatus::Managed
+    );
+}
+
 #[test]
 fn user_disablement_filters_non_managed_hooks_but_not_managed_hooks() {
     let temp = tempdir().expect("create temp dir");