4 files changed, 19 insertions, 1 deletions
diff --git a/.github/workflows/ci_appveyor.yml b/.github/workflows/ci_appveyor.yml
index 9d76d1a..a88dc7d 100644
--- a/.github/workflows/ci_appveyor.yml
+++ b/.github/workflows/ci_appveyor.yml
@@ -45,6 +45,12 @@ jobs:
         with:
           python-version: '3.x'
 
+      - name: Cache Boost
+        uses: actions/cache@v2
+        with:
+          path: C:\projects\boost_*.tar.gz
+          key: '${{ runner.os }}-boost-${{ env.boost_version }}'
+
       - name: Create C:\projects
         run: mkdir C:\projects
 
diff --git a/.github/workflows/ci_github.yml b/.github/workflows/ci_github.yml
index 4d6f58c..54a9a04 100644
--- a/.github/workflows/ci_github.yml
+++ b/.github/workflows/ci_github.yml
@@ -45,6 +45,12 @@ jobs:
         with:
           python-version: '3.x'
 
+      - name: Cache Boost
+        uses: actions/cache@v2
+        with:
+          path: '${{ runner.workspace }}/boost_*.tar.gz'
+          key: '${{ runner.os }}-boost-${{ env.boost_version }}'
+
       - name: Build Boost
         run: python -m project.ci.boost -- --with-filesystem
 
diff --git a/.github/workflows/ci_travis.yml b/.github/workflows/ci_travis.yml
index bf948a7..c78143a 100644
--- a/.github/workflows/ci_travis.yml
+++ b/.github/workflows/ci_travis.yml
@@ -42,6 +42,12 @@ jobs:
         with:
           python-version: '3.x'
 
+      - name: Cache Boost
+        uses: actions/cache@v2
+        with:
+          path: '${{ env.HOME }}/boost_*.tar.gz'
+          key: '${{ runner.os }}-boost-${{ env.boost_version }}'
+
       - name: Build Boost
         run: python -m project.ci.travis.boost -- --with-filesystem
 
diff --git a/project/ci/boost.py b/project/ci/boost.py
index 861dc1a..588df92 100644
--- a/project/ci/boost.py
+++ b/project/ci/boost.py
@@ -45,7 +45,7 @@ def build_ci(dirs, argv=None):
     version = dirs.get_boost_version()
     build_dir = dirs.get_build_dir()
     boost_dir = dirs.get_boost_dir()
-    params = DownloadParameters(version, unpack_dir=build_dir, dest_path=boost_dir)
+    params = DownloadParameters(version, cache_dir=build_dir, dest_path=boost_dir)
     download(params)
 
     params = BuildParameters(boost_dir,