diff --git a/.gitignore b/.gitignore
index 5f9c2fc..96fd286 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,6 +29,7 @@ aliases/*/src
 docs/_build
 docs/_static
 docs/templates
+.coverage
 
 # changes during CD/CI
-aliases/*/pyproject.toml
\ No newline at end of file
+aliases/*/pyproject.toml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d42d190..b4ba99a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.11.2
+
++ increase test coverage of `validators`
+
 ## 0.11.1
 
 + make `yesno()` accept boolean types
diff --git a/src/suou/__init__.py b/src/suou/__init__.py
index 9097a9b..c3c8724 100644
--- a/src/suou/__init__.py
+++ b/src/suou/__init__.py
@@ -37,7 +37,7 @@ from .redact import redact_url_password
 from .http import WantsContentType
 from .color import chalk, WebColor
 
-__version__ = "0.11.1"
+__version__ = "0.11.2"
 
 __all__ = (
     'ConfigOptions', 'ConfigParserConfigSource', 'ConfigSource', 'ConfigValue',
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 0064128..2d3cc89 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -1,7 +1,8 @@
 
 
 import unittest
-from suou.validators import yesno
+from suou.calendar import not_greater_than
+from suou.validators import not_less_than, yesno
 
 class TestValidators(unittest.TestCase):
     def setUp(self):
@@ -21,4 +22,17 @@ class TestValidators(unittest.TestCase):
         self.assertTrue(yesno('2'))
         self.assertTrue(yesno('o'))
         self.assertFalse(yesno('oFF'))
-        self.assertFalse(yesno('no'))
\ No newline at end of file
+        self.assertFalse(yesno('no'))
+        self.assertFalse(yesno(False))
+        self.assertTrue(yesno(True))
+        self.assertFalse(yesno(''))
+
+    def test_not_greater_than(self):
+        self.assertTrue(not_greater_than(5)(5))
+        self.assertTrue(not_greater_than(5)(3))
+        self.assertFalse(not_greater_than(3)(8))
+
+    def test_not_less_than(self):
+        self.assertTrue(not_less_than(5)(5))
+        self.assertFalse(not_less_than(5)(3))
+        self.assertTrue(not_less_than(3)(8))
\ No newline at end of file