diff --git a/scrapy/__init__.py b/scrapy/__init__.py
index 230e5cee3..fb8357f3c 100644
--- a/scrapy/__init__.py
+++ b/scrapy/__init__.py
@@ -24,7 +24,7 @@ warnings.filterwarnings('ignore', category=DeprecationWarning, module='twisted')
 del warnings
 
 # Apply monkey patches to fix issues in external libraries
-from . import _monkeypatches
+from scrapy import _monkeypatches
 del _monkeypatches
 
 from twisted import version as _txv
diff --git a/scrapy/contracts/default.py b/scrapy/contracts/default.py
index 24f6c2e77..e0d425874 100644
--- a/scrapy/contracts/default.py
+++ b/scrapy/contracts/default.py
@@ -4,7 +4,7 @@ from scrapy.item import BaseItem
 from scrapy.http import Request
 from scrapy.exceptions import ContractFail
 
-from . import Contract
+from scrapy.contracts import Contract
 
 
 # contracts
diff --git a/scrapy/core/downloader/__init__.py b/scrapy/core/downloader/__init__.py
index 213268741..c5474a57f 100644
--- a/scrapy/core/downloader/__init__.py
+++ b/scrapy/core/downloader/__init__.py
@@ -10,8 +10,8 @@ from scrapy.utils.defer import mustbe_deferred
 from scrapy.utils.httpobj import urlparse_cached
 from scrapy.resolver import dnscache
 from scrapy import signals
-from .middleware import DownloaderMiddlewareManager
-from .handlers import DownloadHandlers
+from scrapy.core.downloader.middleware import DownloaderMiddlewareManager
+from scrapy.core.downloader.handlers import DownloadHandlers
 
 
 class Slot(object):
diff --git a/scrapy/core/downloader/handlers/http.py b/scrapy/core/downloader/handlers/http.py
index 6111e132a..52535bd8b 100644
--- a/scrapy/core/downloader/handlers/http.py
+++ b/scrapy/core/downloader/handlers/http.py
@@ -1,2 +1,4 @@
-from .http10 import HTTP10DownloadHandler
-from .http11 import HTTP11DownloadHandler as HTTPDownloadHandler
+from scrapy.core.downloader.handlers.http10 import HTTP10DownloadHandler
+from scrapy.core.downloader.handlers.http11 import (
+    HTTP11DownloadHandler as HTTPDownloadHandler,
+)
diff --git a/scrapy/core/downloader/handlers/s3.py b/scrapy/core/downloader/handlers/s3.py
index 808d1bf21..f4a42ce12 100644
--- a/scrapy/core/downloader/handlers/s3.py
+++ b/scrapy/core/downloader/handlers/s3.py
@@ -3,7 +3,7 @@ from six.moves.urllib.parse import unquote
 from scrapy.exceptions import NotConfigured
 from scrapy.utils.httpobj import urlparse_cached
 from scrapy.utils.boto import is_botocore
-from .http import HTTPDownloadHandler
+from scrapy.core.downloader.handlers.http import HTTPDownloadHandler
 
 
 def _get_boto_connection():
diff --git a/scrapy/linkextractors/__init__.py b/scrapy/linkextractors/__init__.py
index 8c3693f04..8411c4d59 100644
--- a/scrapy/linkextractors/__init__.py
+++ b/scrapy/linkextractors/__init__.py
@@ -118,4 +118,4 @@ class FilteringLinkExtractor(object):
 
 
 # Top-level imports
-from .lxmlhtml import LxmlLinkExtractor as LinkExtractor  # noqa: F401
+from scrapy.linkextractors.lxmlhtml import LxmlLinkExtractor as LinkExtractor  # noqa: F401
diff --git a/scrapy/linkextractors/regex.py b/scrapy/linkextractors/regex.py
index e689b4727..49aa2be46 100644
--- a/scrapy/linkextractors/regex.py
+++ b/scrapy/linkextractors/regex.py
@@ -4,7 +4,7 @@ from six.moves.urllib.parse import urljoin
 from w3lib.html import remove_tags, replace_entities, replace_escape_chars, get_base_url
 
 from scrapy.link import Link
-from .sgml import SgmlLinkExtractor
+from scrapy.linkextractors.sgml import SgmlLinkExtractor
 
 linkre = re.compile(
         "<a\s.*?href=(\"[.#]+?\"|\'[.#]+?\'|[^\s]+?)(>|\s.*?>)(.*?)<[/ ]?a>",