diff --git a/examples/rand.py b/examples/rand.py
index dc51c82..836d1c7 100755
--- a/examples/rand.py
+++ b/examples/rand.py
@@ -5,6 +5,8 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
+# pyre-unsafe
+
 import random
 
 for _x in range(10):
diff --git a/examples/timed-progress-bar.py b/examples/timed-progress-bar.py
index 2f7a7c8..46d378a 100755
--- a/examples/timed-progress-bar.py
+++ b/examples/timed-progress-bar.py
@@ -5,6 +5,8 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
+# pyre-unsafe
+
 import datetime
 
 
diff --git a/tests/python/non_strict/hello.py b/tests/python/non_strict/hello.py
index 0f931b3..40226c5 100755
--- a/tests/python/non_strict/hello.py
+++ b/tests/python/non_strict/hello.py
@@ -5,4 +5,6 @@
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
 
+# pyre-unsafe
+
 print("Hello world")