diff --git a/test/integration/certification/certification-expiry.ts b/test/integration/certification/certification-expiry.ts
index 518d1af28107dce614e9346bcd584451d2424250..0ea21e8069dbc29ff57df93a1355eb3a4422bad8 100644
--- a/test/integration/certification/certification-expiry.ts
+++ b/test/integration/certification/certification-expiry.ts
@@ -12,6 +12,7 @@
 // GNU Affero General Public License for more details.
 
 import {assertEqual, writeBasicTestWithConfAnd2Users} from "../tools/test-framework"
+import {CommonConstants} from "../../../app/lib/common-libs/constants"
 
 describe('Certification expiry + trimming', () => writeBasicTestWithConfAnd2Users({
   sigReplay: 3,
@@ -19,6 +20,10 @@ describe('Certification expiry + trimming', () => writeBasicTestWithConfAnd2User
   sigValidity: 10,
 }, (test) => {
 
+  before(() => {
+    CommonConstants.BLOCK_NEW_GENERATED_VERSION = 11
+  })
+
   const now = 1500000000
 
   test('should be able to init with 2 blocks', async (s1, cat, tac, toc) => {
@@ -102,4 +107,8 @@ describe('Certification expiry + trimming', () => writeBasicTestWithConfAnd2User
 [2] [0] [0] [2] -> 
 `)
   })
+
+  after(() => {
+    CommonConstants.BLOCK_NEW_GENERATED_VERSION = 10
+  })
 }))