diff --git a/tests/join_tests.nim b/tests/join_tests.nim
index 0dfdd4c..0d3b4fc 100644
--- a/tests/join_tests.nim
+++ b/tests/join_tests.nim
@@ -3,6 +3,7 @@ import std/os
 import std/strutils
 import std/times
 import std/monotimes
+import std/tables
 import barabadb/core/types
 import barabadb/query/executor as qexec
 import barabadb/query/parser
diff --git a/tests/test_lock b/tests/test_lock
new file mode 100755
index 0000000..9824d92
Binary files /dev/null and b/tests/test_lock differ