diff --git a/js/node/test/test-runner.ts b/js/node/test/test-runner.ts
index 5d9cf61c8d..06ed0acfca 100644
--- a/js/node/test/test-runner.ts
+++ b/js/node/test/test-runner.ts
@@ -112,6 +112,14 @@ export function run(testDataRoot: string): void {
               });
             }
           }
+
+          if (!skipModel) {
+            after(async () => {
+              if (session !== null) {
+                await session.release();
+              }
+            });
+          }
         });
       }
     }