diff --git a/ci/appveyor/install.bat b/ci/appveyor/install.bat
index fcf33f7..e29463d 100644
--- a/ci/appveyor/install.bat
+++ b/ci/appveyor/install.bat
@@ -2,7 +2,6 @@
 cd .. || EXIT /B
 git clone -b %APPVEYOR_REPO_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root || EXIT /B
 cd boost-root || EXIT /B
-git submodule update -q --init libs/config || EXIT /B
 git submodule update -q --init tools/boostdep || EXIT /B
 git submodule update -q --init tools/build || EXIT /B
 git submodule update -q --init tools/inspect || EXIT /B
diff --git a/ci/travis/install.sh b/ci/travis/install.sh
index abc7bb6..64d7bf0 100755
--- a/ci/travis/install.sh
+++ b/ci/travis/install.sh
@@ -22,7 +22,6 @@ if [ "$SELF" == "interval" ]; then
 fi
 git clone -b $TRAVIS_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
 cd boost-root
-git submodule update -q --init libs/config
 git submodule update -q --init tools/boostdep
 git submodule update -q --init tools/build
 git submodule update -q --init tools/inspect