diff --git a/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryCreatedByIT.java b/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryCreatedByIT.java
index 4bab08fb..d3e275dc 100644
--- a/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryCreatedByIT.java
+++ b/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryCreatedByIT.java
@@ -3,6 +3,7 @@ package com.cameleer.server.app.storage;
 import com.cameleer.server.app.AbstractPostgresIT;
 import com.cameleer.server.core.runtime.Deployment;
 import com.cameleer.server.core.runtime.DeploymentService;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -27,6 +28,7 @@ class PostgresDeploymentRepositoryCreatedByIT extends AbstractPostgresIT {
         jdbc.update("DELETE FROM deployments");
         jdbc.update("DELETE FROM app_versions");
         jdbc.update("DELETE FROM apps");
+        jdbc.update("DELETE FROM users WHERE user_id IN ('alice', 'bob')");
 
         envId = jdbc.queryForObject(
             "SELECT id FROM environments WHERE slug = 'default'", UUID.class);
@@ -50,6 +52,14 @@ class PostgresDeploymentRepositoryCreatedByIT extends AbstractPostgresIT {
                     versionId, appId);
     }
 
+    @AfterEach
+    void cleanup() {
+        jdbc.update("DELETE FROM deployments");
+        jdbc.update("DELETE FROM app_versions");
+        jdbc.update("DELETE FROM apps");
+        jdbc.update("DELETE FROM users WHERE user_id IN ('alice', 'bob')");
+    }
+
     @Test
     void createDeployment_persists_createdBy_and_returns_it() {
         Deployment d = deploymentService.createDeployment(appId, versionId, envId, "alice");
diff --git a/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryIT.java b/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryIT.java
index d0b6638d..27cd6179 100644
--- a/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryIT.java
+++ b/cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryIT.java
@@ -65,6 +65,7 @@ class PostgresDeploymentRepositoryIT extends AbstractPostgresIT {
                 null
         );
 
+        // pre-V4 rows: no creator (createdBy is nullable)
         UUID deploymentId = repository.create(appId, appVersionId, envId, "test-container", null);
         repository.saveDeployedConfigSnapshot(deploymentId, snapshot);