diff --git a/config/environment.rb.SAMPLE b/config/environment.rb.SAMPLE
--- a/config/environment.rb.SAMPLE
+++ b/config/environment.rb.SAMPLE
@@ -107,3 +107,4 @@
 # OPTIONS FOR CODE JOM
 # --------------------
 CODEJOM_MAX_ALIVE_LEVEL = 10
+TEST_ASSIGNMENT_EXPIRATION_DURATION = 5.minute