diff --git a/.gitignore b/.gitignore
index 766ffe3a68..44abed16ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -153,3 +153,8 @@ venv.bak/
 
 # Custom rules (everything added below won't be overriden by 'Generate .gitignore File' if you use 'Update' option)
 .vs/slnx.sqlite
+
+# mypy/typing section
+typeshed/
+.dmypy.json
+mypyhtml/
diff --git a/pipenv/vendor/vendor.txt b/pipenv/vendor/vendor.txt
index 1a419eef37..2f5834d98b 100644
--- a/pipenv/vendor/vendor.txt
+++ b/pipenv/vendor/vendor.txt
@@ -5,44 +5,43 @@ blindspin==2.0.1
 click==7.0
 click-completion==0.5.0
 click-didyoumean==0.0.3
-colorama==0.3.9
+colorama==0.4.1
 delegator.py==0.1.1
     pexpect==4.6.0
         ptyprocess==0.6.0
-python-dotenv==0.9.1
+python-dotenv==0.10.1
 first==2.0.1
 iso8601==0.1.12
 jinja2==2.10
 markupsafe==1.0
 parse==1.9.0
-pathlib2==2.3.2
+pathlib2==2.3.3
     scandir==1.9
-pipdeptree==0.13.0
+pipdeptree==0.13.1
 pipreqs==0.4.9
     docopt==0.6.2
     yarg==0.1.9
 pythonfinder==1.1.10
-requests==2.20.1
+requests==2.21.0
     chardet==3.0.4
-    idna==2.7
-    urllib3==1.24
-    certifi==2018.10.15
-requirementslib==1.3.3
+    idna==2.8
+    urllib3==1.24.1
+    certifi==2018.11.29
+requirementslib==1.4.0
     attrs==18.2.0
     distlib==0.2.8
-    packaging==18.0
-    pyparsing==2.2.2
+    packaging==19.0
+    pyparsing==2.3.1
     git+https://github.com/sarugaku/plette.git@master#egg=plette
-        tomlkit==0.5.2
-shellingham==1.2.7
-six==1.11.0
+        tomlkit==0.5.3
+shellingham==1.2.8
+six==1.12.0
 semver==2.8.1
 shutilwhich==1.1.0
 toml==0.10.0
-cached-property==1.4.3
-vistir==0.2.5
+cached-property==1.5.1
+vistir==0.3.0
 pip-shims==0.3.2
-ptyprocess==0.6.0
 enum34==1.1.6
 yaspin==0.14.0
 cerberus==1.2
@@ -50,3 +49,4 @@ git+https://github.com/sarugaku/passa.git@master#egg=passa
 cursor==1.2.0
 resolvelib==0.2.2
 backports.functools_lru_cache==1.5
+pep517==0.5.0
diff --git a/tasks/release.py b/tasks/release.py
index 7c2e7abaef..375d73020c 100644
--- a/tasks/release.py
+++ b/tasks/release.py
@@ -87,7 +87,7 @@ def release(ctx, dry_run=False):
         log(f'Would commit with message: "Release v{version}"')
     else:
         ctx.run('towncrier')
-        ctx.run("git add CHANGELOG.rst news/")
+        ctx.run("git add CHANGELOG.rst news/ {0}".format(get_version_file(ctx).as_posix()))
         ctx.run("git rm CHANGELOG.draft.rst")
         ctx.run(f'git commit -m "Release v{version}"')
 
diff --git a/tasks/vendoring/__init__.py b/tasks/vendoring/__init__.py
index c9757965c4..d6ea9614d3 100644
--- a/tasks/vendoring/__init__.py
+++ b/tasks/vendoring/__init__.py
@@ -346,6 +346,26 @@ def post_install_cleanup(ctx, vendor_dir):
     remove_all(vendor_dir.glob('toml.py'))
 
 
+@invoke.task
+def apply_patches(ctx, patched=False, pre=False):
+    if patched:
+        vendor_dir = _get_patched_dir(ctx)
+    else:
+        vendor_dir = _get_vendor_dir(ctx)
+    log("Applying pre-patches...")
+    patch_dir = Path(__file__).parent / 'patches' / vendor_dir.name
+    if pre:
+        if not patched:
+            pass
+        for patch in patch_dir.glob('*.patch'):
+            if not patch.name.startswith('_post'):
+                apply_patch(ctx, patch)
+    else:
+        patches = patch_dir.glob('*.patch' if not patched else '_post*.patch')
+        for patch in patches:
+            apply_patch(ctx, patch)
+
+
 def vendor(ctx, vendor_dir, package=None, rewrite=True):
     log('Reinstalling vendored libraries')
     is_patched = vendor_dir.name == 'patched'
@@ -359,12 +379,8 @@ def vendor(ctx, vendor_dir, package=None, rewrite=True):
 
     # Apply pre-patches
     log("Applying pre-patches...")
-    patch_dir = Path(__file__).parent / 'patches' / vendor_dir.name
     if is_patched:
-        for patch in patch_dir.glob('*.patch'):
-            if not patch.name.startswith('_post'):
-                apply_patch(ctx, patch)
-
+        apply_patches(ctx, patched=is_patched, pre=True)
     log("Removing scandir library files...")
     remove_all(vendor_dir.glob('*.so'))
     drop_dir(vendor_dir / 'setuptools')
@@ -385,10 +401,7 @@ def vendor(ctx, vendor_dir, package=None, rewrite=True):
                 rewrite_file_imports(item, vendored_libs, vendor_dir)
     write_backport_imports(ctx, vendor_dir)
     if not package:
-        log('Applying post-patches...')
-        patches = patch_dir.glob('*.patch' if not is_patched else '_post*.patch')
-        for patch in patches:
-            apply_patch(ctx, patch)
+        apply_patches(ctx, patched=is_patched, pre=False)
         if is_patched:
             piptools_vendor = vendor_dir / 'piptools' / '_vendored'
             if piptools_vendor.exists():
diff --git a/tasks/vendoring/patches/vendor/dotenv-windows-unicode.patch b/tasks/vendoring/patches/vendor/dotenv-windows-unicode.patch
deleted file mode 100644
index c090e8853f..0000000000
--- a/tasks/vendoring/patches/vendor/dotenv-windows-unicode.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --git a/pipenv/vendor/dotenv/main.py b/pipenv/vendor/dotenv/main.py
-index 3d1bd72f..75f49c4a 100644
---- a/pipenv/vendor/dotenv/main.py
-+++ b/pipenv/vendor/dotenv/main.py
-@@ -94,6 +94,13 @@ class DotEnv():
-         for k, v in self.dict().items():
-             if k in os.environ and not override:
-                 continue
-+            # With Python 2 on Windows, ensuree environment variables are
-+            # system strings to avoid "TypeError: environment can only contain
-+            # strings" in Python's subprocess module.
-+            if sys.version_info.major < 3 and sys.platform == 'win32':
-+                from pipenv.utils import fs_str
-+                k = fs_str(k)
-+                v = fs_str(v)
-             os.environ[k] = v
-
-         return True
diff --git a/tasks/vendoring/patches/vendor/pipdeptree-updated-pip18.patch b/tasks/vendoring/patches/vendor/pipdeptree-updated-pip18.patch
index d479ebfa39..5d5a381f3f 100644
--- a/tasks/vendoring/patches/vendor/pipdeptree-updated-pip18.patch
+++ b/tasks/vendoring/patches/vendor/pipdeptree-updated-pip18.patch
@@ -7,7 +7,7 @@ index 7820aa5..2082fc8 100644
      from ordereddict import OrderedDict
  
 -try:
--    from pipenv.patched.notpip._internal import get_installed_distributions
+-    from pipenv.patched.notpip._internal.utils.misc import get_installed_distributions
 -    from pipenv.patched.notpip._internal.operations.freeze import FrozenRequirement
 -except ImportError:
 -    from pipenv.patched.notpip import get_installed_distributions, FrozenRequirement
@@ -17,3 +17,4 @@ index 7820aa5..2082fc8 100644
  
  import pkg_resources
  # inline:
+
diff --git a/tasks/vendoring/patches/vendor/tomlkit-fix.patch b/tasks/vendoring/patches/vendor/tomlkit-fix.patch
index 36e2f8083d..4aa6c16f0c 100644
--- a/tasks/vendoring/patches/vendor/tomlkit-fix.patch
+++ b/tasks/vendoring/patches/vendor/tomlkit-fix.patch
@@ -14,8 +14,10 @@ diff --git a/pipenv/vendor/tomlkit/container.py b/pipenv/vendor/tomlkit/containe
 index cb8af1d5..9b5db5cb 100644
 --- a/pipenv/vendor/tomlkit/container.py
 +++ b/pipenv/vendor/tomlkit/container.py
-@@ -1,13 +1,5 @@
+@@ -1,15 +1,7 @@
  from __future__ import unicode_literals
+
+ import copy
  
 -from typing import Any
 -from typing import Dict
diff --git a/tasks/vendoring/patches/vendor/vistir-imports.patch b/tasks/vendoring/patches/vendor/vistir-imports.patch
index 673efad815..544b5564c3 100644
--- a/tasks/vendoring/patches/vendor/vistir-imports.patch
+++ b/tasks/vendoring/patches/vendor/vistir-imports.patch
@@ -15,7 +15,7 @@ diff --git a/pipenv/vendor/vistir/compat.py b/pipenv/vendor/vistir/compat.py
 index 9ae33fdc..ec3b65cb 100644
 --- a/pipenv/vendor/vistir/compat.py
 +++ b/pipenv/vendor/vistir/compat.py
-@@ -31,11 +31,11 @@ if sys.version_info >= (3, 5):
+@@ -43,11 +43,11 @@ if sys.version_info >= (3, 5):
      from functools import lru_cache
  else:
      from pathlib2 import Path
@@ -29,12 +29,12 @@ index 9ae33fdc..ec3b65cb 100644
      NamedTemporaryFile = _NamedTemporaryFile
  else:
      from tempfile import NamedTemporaryFile
-@@ -44,7 +44,7 @@ else:
+@@ -56,7 +56,7 @@ else:
  try:
      from weakref import finalize
  except ImportError:
--    from backports.weakref import finalize
-+    from pipenv.vendor.backports.weakref import finalize
+-    from backports.weakref import finalize  # type: ignore
++    from pipenv.vendor.backports.weakref import finalize  # type: ignore
  
  try:
      from functools import partialmethod