diff --git a/pythonbpf/expr/__init__.py b/pythonbpf/expr/__init__.py
new file mode 100644
index 0000000..55eae5e
--- /dev/null
+++ b/pythonbpf/expr/__init__.py
@@ -0,0 +1,3 @@
+from .expr_pass import eval_expr, handle_expr, convert_to_bool
+
+__all__ = ["eval_expr", "handle_expr", "convert_to_bool"]
diff --git a/pythonbpf/expr_pass.py b/pythonbpf/expr/expr_pass.py
similarity index 100%
rename from pythonbpf/expr_pass.py
rename to pythonbpf/expr/expr_pass.py