diff --git a/tests/integration/CMakeLists.txt b/tests/integration/CMakeLists.txt
index 10a87d0..1284cdb 100644
--- a/tests/integration/CMakeLists.txt
+++ b/tests/integration/CMakeLists.txt
@@ -33,7 +33,7 @@ if (PGLAB_INTEGRATION_TESTS)
     set_tests_properties(db_up PROPERTIES FIXTURES_SETUP pgcluster LABELS integration)
     set_tests_properties(db_down PROPERTIES FIXTURES_CLEANUP pgcluster LABELS integration)
 
-    foreach (v 14 15 16 17)
+    foreach (v 14 15 16 17 18)
         add_test(NAME integration_pg${v} COMMAND IntegrationTests)
         set_tests_properties(integration_pg${v} PROPERTIES
             FIXTURES_REQUIRED pgcluster
diff --git a/tests/integration/docker-compose.yml b/tests/integration/docker-compose.yml
index e90e8dc..b2749e2 100644
--- a/tests/integration/docker-compose.yml
+++ b/tests/integration/docker-compose.yml
@@ -1,6 +1,6 @@
 x-pg: &pg
   environment: { POSTGRES_PASSWORD: test }
-  tmpfs: [/var/lib/postgresql/data]
+  tmpfs: [/var/lib/postgresql]
   command: >
     postgres -c fsync=off -c synchronous_commit=off
     -c full_page_writes=off -c max_connections=200
@@ -14,3 +14,4 @@ services:
   pg15: { <<: *pg, image: "postgres:15", ports: ["54315:5432"] }
   pg16: { <<: *pg, image: "postgres:16", ports: ["54316:5432"] }
   pg17: { <<: *pg, image: "postgres:17", ports: ["54317:5432"] }
+  pg18: { <<: *pg, image: "postgres:18", ports: ["54318:5432"] }