diff --git a/.appveyor.yml b/.appveyor.yml
index 035fa86..d3611f6 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -50,6 +50,14 @@ environment:
       PYTHON_VERSION: 3.5
       PYTHON_ARCH: 64
 
+    - PYTHON: C:\Python38rc1
+      PYTHON_VERSION: 3.8
+      PYTHON_ARCH: 32
+
+    - PYTHON: C:\Python38rc1-x64
+      PYTHON_VERSION: 3.8
+      PYTHON_ARCH: 64
+
 init:
   - "ECHO %PYTHON% %PYTHON_VERSION% %PYTHON_ARCH%"
   - "ECHO \"%APPVEYOR_SCHEDULED_BUILD%\""
diff --git a/.travis.yml b/.travis.yml
index 6b19a35..7eaae8d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -63,6 +63,11 @@ matrix:
       env:
         - MB_PYTHON_VERSION=3.7
         - MB_PYTHON_OSX_VER=10.9
+    - os: osx
+      language: generic
+      env:
+        - MB_PYTHON_VERSION=3.8
+        - MB_PYTHON_OSX_VER=10.9
 
 before_install:
     - if [ "$TRAVIS_BRANCH" == "master" ]; then
diff --git a/multibuild b/multibuild
index f0bff09..d0cf77e 160000
--- a/multibuild
+++ b/multibuild
@@ -1 +1 @@
-Subproject commit f0bff09b0c03ed5325cbcbef135b16b2b9162d53
+Subproject commit d0cf77e62028704875073e3dc4626f61d1c33b0e