diff --git a/.travis.yml b/.travis.yml
index ef3c1bc..1b1f780 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -208,7 +208,7 @@ install:
   - git submodule update --init tools/build
   - git submodule update --init libs/config
   - git submodule update --init tools/boostdep
-  - git clone https://github.com/pdimov/mp11 libs/mp11
+  - git clone -b $TRAVIS_BRANCH https://github.com/pdimov/mp11 libs/mp11
   - mkdir libs/variant2
   - cp -r $TRAVIS_BUILD_DIR/* libs/variant2
   - python tools/boostdep/depinst/depinst.py variant2
diff --git a/appveyor.yml b/appveyor.yml
index aa33f0e..152eb22 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -23,7 +23,7 @@ install:
   - git submodule update --init tools/build
   - git submodule update --init libs/config
   - git submodule update --init tools/boostdep
-  - git clone https://github.com/pdimov/mp11 libs/mp11
+  - git clone -b %APPVEYOR_REPO_BRANCH% https://github.com/pdimov/mp11 libs/mp11
   - mkdir libs\variant2
   - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\variant2
   - python tools/boostdep/depinst/depinst.py variant2