diff --git a/plugin/trino-postgresql/src/test/java/io/trino/plugin/postgresql/TestPostgreSqlTypeMapping.java b/plugin/trino-postgresql/src/test/java/io/trino/plugin/postgresql/TestPostgreSqlTypeMapping.java
index cc88ae85c787..f8ac91970c65 100644
--- a/plugin/trino-postgresql/src/test/java/io/trino/plugin/postgresql/TestPostgreSqlTypeMapping.java
+++ b/plugin/trino-postgresql/src/test/java/io/trino/plugin/postgresql/TestPostgreSqlTypeMapping.java
@@ -124,7 +124,7 @@ public class TestPostgreSqlTypeMapping
     private static final LocalDate EPOCH_DAY = LocalDate.ofEpochDay(0);
     private static final JsonCodec<List<Map<String, String>>> HSTORE_CODEC = listJsonCodec(mapJsonCodec(String.class, String.class));
 
-    private TestingPostgreSqlServer postgreSqlServer;
+    protected TestingPostgreSqlServer postgreSqlServer;
 
     private final LocalDateTime beforeEpoch = LocalDateTime.of(1958, 1, 1, 13, 18, 3, 123_000_000);
     private final LocalDateTime epoch = LocalDateTime.of(1970, 1, 1, 0, 0, 0);