diff --git a/.circleci/config.yml b/.circleci/config.yml
index 06c5d90c..bb9a20b4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -37,7 +37,6 @@ jobs:
           - v2-dependencies-
 
     - run: pip install --user --upgrade setuptools
-    - run: pip install --user git+git://github.com/rocky/python-xdis.git@task/separate-dis#egg=xdis-4.4.1
     - run: pip install --user -e .
     - run: pip install --user -r requirements-dev.txt
 
diff --git a/.travis.yml b/.travis.yml
index 908dab96..3ab93e97 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,6 @@ matrix:
       dist: xenial  # required for Python >= 3.7 (travis-ci/travis-ci#9069)
 
 install:
-- pip install git+git://github.com/rocky/python-xdis.git@task/separate-dis#egg=xdis-4.3.3
 - pip install -e .
 - pip install -r requirements-dev.txt
 
diff --git a/__pkginfo__.py b/__pkginfo__.py
index b0e4f89f..40fb0271 100644
--- a/__pkginfo__.py
+++ b/__pkginfo__.py
@@ -58,7 +58,7 @@ entry_points       = {
     ]}
 ftp_url            = None
 install_requires   = ["spark-parser >= 1.8.9, < 1.9.0",
-                      "xdis >= 4.4.0, < 4.5.0"]
+                      "xdis >= 4.5.0, < 4.6.0"]
 
 license            = "GPL3"
 mailing_list       = "python-debugger@googlegroups.com"
diff --git a/admin-tools/pyenv-newer-versions b/admin-tools/pyenv-newer-versions
index d48a318a..aa4251d9 100644
--- a/admin-tools/pyenv-newer-versions
+++ b/admin-tools/pyenv-newer-versions
@@ -5,4 +5,4 @@ if [[ $0 == ${BASH_SOURCE[0]} ]] ; then
     echo "This script should be *sourced* rather than run directly through bash"
     exit 1
 fi
-export PYVERSIONS='3.5.9 3.6.10 2.6.9 3.3.7 2.7.17 3.2.6 3.1.5 3.4.10 3.7.7 3.8.2'
+export PYVERSIONS='3.5.9 3.6.10 2.6.9 3.3.7 2.7.18 3.2.6 3.1.5 3.4.10 3.7.7 3.8.2'
diff --git a/appveyor.yml b/appveyor.yml
index bab92723..f4aa6e2d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -53,7 +53,6 @@ install:
   # compiled extensions and are not provided as pre-built wheel packages,
   # pip will build them from source using the MSVC compiler matching the
   # target Python version and architecture
-  - "%CMD_IN_ENV% pip install git+git://github.com/rocky/python-xdis.git@task/separate-dis#egg=xdis-4.4.1"
   - "%CMD_IN_ENV% pip install -r requirements.txt"
 
 build_script: