diff --git a/bin/tests/system/conftest.py b/bin/tests/system/conftest.py
index 721fde1ba7..1259cc8bab 100644
--- a/bin/tests/system/conftest.py
+++ b/bin/tests/system/conftest.py
@@ -315,6 +315,9 @@ def env(ports):
         env[portname] = str(portnum)
     env["builddir"] = f"{env['TOP_BUILDDIR']}/{SYSTEM_TEST_DIR_GIT_PATH}"
     env["srcdir"] = f"{env['TOP_SRCDIR']}/{SYSTEM_TEST_DIR_GIT_PATH}"
+    env["HYPOTHESIS_STORAGE_DIRECTORY"] = (
+        f"{env['TOP_BUILDDIR']}/{SYSTEM_TEST_DIR_GIT_PATH}/.hypothesis"
+    )
     return env