diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f33e1b..a45a0b1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,11 @@ jobs:
             os: ubuntu-latest
             container: ubuntu:18.04
             install: g++-4.8
+          - toolset: gcc-4.9
+            cxxstd: "03,11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install: g++-4.9
           - toolset: gcc-5
             cxxstd: "03,11,14,1z"
             os: ubuntu-latest
@@ -194,7 +199,7 @@ jobs:
           mkdir -p libs/$LIBRARY
           cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
           git submodule update --init tools/boostdep
-          python3 tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY
+          python3 tools/boostdep/depinst/depinst.py $LIBRARY
           ./bootstrap.sh
           ./b2 -d0 headers