diff --git a/tests/target_attach.py b/tests/target_attach.py
index 1907fbb..ab8354f 100644
--- a/tests/target_attach.py
+++ b/tests/target_attach.py
@@ -8,11 +8,11 @@ def sleep(t):
 
 
 def foo():
-    sleep(0.1)
+    sleep(0.4)
 
 
 def bar():
-    sleep(0.2)
+    sleep(0.8)
     foo()
 
 
diff --git a/tests/target_gather.py b/tests/target_gather.py
index 6d56a1e..14f83b7 100644
--- a/tests/target_gather.py
+++ b/tests/target_gather.py
@@ -23,7 +23,7 @@ async def f4():
 
 
 async def f5():
-    await asyncio.sleep(0.5)
+    await asyncio.sleep(1)
 
 
 async def main():
diff --git a/tests/test_where.py b/tests/test_where.py
index d78b7f0..8215049 100644
--- a/tests/test_where.py
+++ b/tests/test_where.py
@@ -13,7 +13,7 @@ def test_where():
     with Popen(
         [sys.executable, "-m", "tests.target_attach"], stdout=PIPE, stderr=PIPE
     ) as target:
-        sleep(0.5)
+        sleep(1)
         try:
             # attach multiple times
             for _ in range(10):