diff --git a/sphinx/ext/intersphinx.py b/sphinx/ext/intersphinx.py
index 5cbe4ff66..e3f8dc275 100644
--- a/sphinx/ext/intersphinx.py
+++ b/sphinx/ext/intersphinx.py
@@ -427,6 +427,6 @@ def inspect_main(argv):
 
 if __name__ == '__main__':
     import logging  # type: ignore
-    logging.basicConfig()
+    logging.basicConfig()  # type: ignore
 
     inspect_main(argv=sys.argv[1:])  # type: ignore
diff --git a/sphinx/pycode/__init__.py b/sphinx/pycode/__init__.py
index a97903a27..3e70e28ce 100644
--- a/sphinx/pycode/__init__.py
+++ b/sphinx/pycode/__init__.py
@@ -32,7 +32,7 @@ class ModuleAnalyzer(object):
     def for_string(cls, string, modname, srcname='<string>'):
         # type: (unicode, unicode, unicode) -> ModuleAnalyzer
         if isinstance(string, bytes):
-            return cls(BytesIO(string), modname, srcname)
+            return cls(BytesIO(string), modname, srcname)  # type: ignore
         return cls(StringIO(string), modname, srcname, decoded=True)  # type: ignore
 
     @classmethod
diff --git a/sphinx/testing/path.py b/sphinx/testing/path.py
index 585933499..1c9781dea 100644
--- a/sphinx/testing/path.py
+++ b/sphinx/testing/path.py
@@ -30,7 +30,7 @@ class path(text_type):
             # type: (unicode, unicode, unicode) -> path
             if isinstance(s, str):
                 s = s.decode(encoding, errors)
-                return text_type.__new__(cls, s)
+                return text_type.__new__(cls, s)  # type: ignore
             return text_type.__new__(cls, s)  # type: ignore
 
     @property
diff --git a/sphinx/util/images.py b/sphinx/util/images.py
index c385c19a9..d5e0db2d7 100644
--- a/sphinx/util/images.py
+++ b/sphinx/util/images.py
@@ -73,7 +73,7 @@ def get_image_size(filename):
 
 def guess_mimetype_for_stream(stream, default=None):
     # type: (IO, unicode) -> unicode
-    imgtype = imghdr.what(stream)
+    imgtype = imghdr.what(stream)  # type: ignore
     if imgtype:
         return 'image/' + imgtype
     else:
@@ -141,4 +141,4 @@ def test_svg(h, f):
 
 # install test_svg() to imghdr
 # refs: https://docs.python.org/3.6/library/imghdr.html#imghdr.tests
-imghdr.tests.append(test_svg)
+imghdr.tests.append(test_svg)  # type: ignore
diff --git a/sphinx/util/osutil.py b/sphinx/util/osutil.py
index 986171293..4c75009ee 100644
--- a/sphinx/util/osutil.py
+++ b/sphinx/util/osutil.py
@@ -235,7 +235,7 @@ def abspath(pathdir):
         try:
             pathdir = pathdir.decode(fs_encoding)
         except UnicodeDecodeError:
-            raise UnicodeDecodeError('multibyte filename not supported on '
+            raise UnicodeDecodeError('multibyte filename not supported on '  # type: ignore
                                      'this filesystem encoding '
                                      '(%r)' % fs_encoding)
     return pathdir
diff --git a/sphinx/util/requests.py b/sphinx/util/requests.py
index b6c0d1ab8..65ddaedb7 100644
--- a/sphinx/util/requests.py
+++ b/sphinx/util/requests.py
@@ -34,7 +34,7 @@ except ImportError:
         from urllib3.exceptions import InsecureRequestWarning  # type: ignore
     except ImportError:
         # for requests < 2.4.0
-        InsecureRequestWarning = None
+        InsecureRequestWarning = None  # type: ignore
 
 try:
     from requests.packages.urllib3.exceptions import InsecurePlatformWarning
@@ -44,7 +44,7 @@ except ImportError:
         from urllib3.exceptions import InsecurePlatformWarning  # type: ignore
     except ImportError:
         # for requests < 2.4.0
-        InsecurePlatformWarning = None
+        InsecurePlatformWarning = None  # type: ignore
 
 # try to load requests[security] (but only if SSL is available)
 try: