diff --git a/ext/pdo_firebird/tests/fb4_datatypes.phpt b/ext/pdo_firebird/tests/fb4_datatypes.phpt
index 3ae452d5eb4e..11c1b96d2c6f 100644
--- a/ext/pdo_firebird/tests/fb4_datatypes.phpt
+++ b/ext/pdo_firebird/tests/fb4_datatypes.phpt
@@ -7,6 +7,13 @@ pdo_firebird
 if (Pdo\Firebird::getApiVersion() < 40) {
 	die('skip: Firebird API version must be greater than or equal to 40');
 }
+require 'testdb.inc';
+$dbh = getDbConnection();
+$stmt = $dbh->query("SELECT RDB\$get_context('SYSTEM', 'ENGINE_VERSION') AS VERSION FROM RDB\$DATABASE");
+$data = $stmt->fetch(\PDO::FETCH_ASSOC);
+if (!$data || !array_key_exists('VERSION', $data) || version_compare($data['VERSION'], '4.0.0') < 0) {
+	die("skip Firebird Server version must be greater than or equal to 4.0.0");
+}
 ?>
 --XLEAK--
 A bug in firebird causes a memory leak when calling `isc_attach_database()`.
diff --git a/ext/pdo_firebird/tests/fb4_datatypes_params.phpt b/ext/pdo_firebird/tests/fb4_datatypes_params.phpt
index f1b4827b9e72..74dca970ef55 100644
--- a/ext/pdo_firebird/tests/fb4_datatypes_params.phpt
+++ b/ext/pdo_firebird/tests/fb4_datatypes_params.phpt
@@ -7,6 +7,13 @@ pdo_firebird
 if (Pdo\Firebird::getApiVersion() < 40) {
 	die('skip: Firebird API version must be greater than or equal to 40');
 }
+require 'testdb.inc';
+$dbh = getDbConnection();
+$stmt = $dbh->query("SELECT RDB\$get_context('SYSTEM', 'ENGINE_VERSION') AS VERSION FROM RDB\$DATABASE");
+$data = $stmt->fetch(\PDO::FETCH_ASSOC);
+if (!$data || !array_key_exists('VERSION', $data) || version_compare($data['VERSION'], '4.0.0') < 0) {
+	die("skip Firebird Server version must be greater than or equal to 4.0.0");
+}
 ?>
 --XLEAK--
 A bug in firebird causes a memory leak when calling `isc_attach_database()`.