diff --git a/kallithea/tests/__init__.py b/kallithea/tests/__init__.py
--- a/kallithea/tests/__init__.py
+++ b/kallithea/tests/__init__.py
@@ -60,7 +60,7 @@ parametrize = pytest.mark.parametrize
 
 __all__ = [
     'skipif', 'parametrize', 'environ', 'url', 'TestController',
-    'ldap_lib_installed', 'pam_lib_installed',
+    'ldap_lib_installed', 'pam_lib_installed', 'invalidate_all_caches',
     'TESTS_TMP_PATH', 'HG_REPO', 'GIT_REPO', 'NEW_HG_REPO', 'NEW_GIT_REPO',
     'HG_FORK', 'GIT_FORK', 'TEST_USER_ADMIN_LOGIN', 'TEST_USER_ADMIN_PASS',
     'TEST_USER_ADMIN_EMAIL', 'TEST_USER_REGULAR_LOGIN', 'TEST_USER_REGULAR_PASS',
@@ -142,6 +142,16 @@ try:
 except ImportError:
     pam_lib_installed = False
 
+def invalidate_all_caches():
+    """Invalidate all beaker caches currently configured.
+    Useful when manipulating IP permissions in a test and changes need to take
+    effect immediately.
+    Note: Any use of this function is probably a workaround - it should be
+    replaced with a more specific cache invalidation in code or test."""
+    from beaker.cache import cache_managers
+    for cache in cache_managers.values():
+        cache.clear()
+
 class NullHandler(logging.Handler):
     def emit(self, record):
         pass
diff --git a/kallithea/tests/fixture.py b/kallithea/tests/fixture.py
--- a/kallithea/tests/fixture.py
+++ b/kallithea/tests/fixture.py
@@ -60,7 +60,7 @@ class Fixture(object):
                 anon.active = status
                 Session().add(anon)
                 Session().commit()
-                time.sleep(1.5)  # hack: wait for beaker sql_cache_short to expire
+                invalidate_all_caches()
 
             def __exit__(self, exc_type, exc_val, exc_tb):
                 anon = User.get_default_user()
diff --git a/kallithea/tests/functional/test_admin_permissions.py b/kallithea/tests/functional/test_admin_permissions.py
--- a/kallithea/tests/functional/test_admin_permissions.py
+++ b/kallithea/tests/functional/test_admin_permissions.py
@@ -23,8 +23,9 @@ class TestAdminPermissionsController(Tes
                                  params=dict(new_ip='127.0.0.0/24',
                                  _authentication_token=self.authentication_token()))
 
-        # sleep more than beaker.cache.sql_cache_short.expire to expire user cache
-        time.sleep(1.5)
+        # IP permissions are cached, need to invalidate this cache explicitly
+        invalidate_all_caches()
+
         self.app.get(url('admin_permissions_ips'), status=302)
 
         # REMOTE_ADDR must match 127.0.0.0/24
@@ -43,8 +44,8 @@ class TestAdminPermissionsController(Tes
                                              _authentication_token=self.authentication_token()),
                                  extra_environ={'REMOTE_ADDR': '127.0.0.1'})
 
-        # sleep more than beaker.cache.sql_cache_short.expire to expire user cache
-        time.sleep(1.5)
+        # IP permissions are cached, need to invalidate this cache explicitly
+        invalidate_all_caches()
 
         response = self.app.get(url('admin_permissions_ips'))
         response.mustcontain('All IP addresses are allowed')
diff --git a/kallithea/tests/other/manual_test_vcs_operations.py b/kallithea/tests/other/manual_test_vcs_operations.py
--- a/kallithea/tests/other/manual_test_vcs_operations.py
+++ b/kallithea/tests/other/manual_test_vcs_operations.py
@@ -531,7 +531,9 @@ class TestVCSOperations(TestController):
                 UserIpMap.delete(ip.ip_id)
             Session().commit()
 
-        time.sleep(2)
+        # IP permissions are cached, need to invalidate this cache explicitly
+        invalidate_all_caches()
+
         clone_url = _construct_url(HG_REPO)
         stdout, stderr = Command(tempfile.gettempdir()).execute('hg clone', clone_url)
 
@@ -557,7 +559,9 @@ class TestVCSOperations(TestController):
                 UserIpMap.delete(ip.ip_id)
             Session().commit()
 
-        time.sleep(2)
+        # IP permissions are cached, need to invalidate this cache explicitly
+        invalidate_all_caches()
+
         clone_url = _construct_url(GIT_REPO)
         stdout, stderr = Command(tempfile.gettempdir()).execute('git clone', clone_url)