diff --git a/tests/end2end/test_end2end_bnn_pynq.py b/tests/end2end/test_end2end_bnn_pynq.py
index ccdd8816ee51d3bde56f41e436ed080b5a36eeca..79cfafa22d670f168c3c03a5ef01a51256912a8c 100644
--- a/tests/end2end/test_end2end_bnn_pynq.py
+++ b/tests/end2end/test_end2end_bnn_pynq.py
@@ -102,7 +102,7 @@ from finn.util.test import (
 )
 
 build_dir = os.environ["FINN_BUILD_DIR"]
-target_clk_ns = 10
+target_clk_ns = 20
 mem_mode = "decoupled"
 rtlsim_trace = False