diff --git a/.changeset/warm-moons-act.md b/.changeset/warm-moons-act.md
new file mode 100644
index 00000000..970f6962
--- /dev/null
+++ b/.changeset/warm-moons-act.md
@@ -0,0 +1,5 @@
+---
+'@onehop/js': patch
+---
+
+Added ProjectSecret#in_use_by
diff --git a/src/rest/types/projects.ts b/src/rest/types/projects.ts
index 20a58068..edfe87ba 100644
--- a/src/rest/types/projects.ts
+++ b/src/rest/types/projects.ts
@@ -163,6 +163,11 @@ export interface Secret {
 	 * The time this secret was created at
 	 */
 	created_at: Timestamp;
+
+	/**
+	 * Deployment IDs this secret is used by
+	 */
+	in_use_by: Id<'deployment'>[];
 }
 
 export type ProjectsEndpoints =