diff --git a/.github/workflows/basic.yml b/.github/workflows/basic.yml
index 89c2fc0..d3a9d92 100644
--- a/.github/workflows/basic.yml
+++ b/.github/workflows/basic.yml
@@ -37,10 +37,10 @@ jobs:
           python-version: '3.x'
 
       - name: Cache Boost
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: boost_*.tar.gz
-          key: ${{ runner.os }}-boost-1.72.0
+          key: boost-1.72.0
 
       - name: Build Boost
         run: |
diff --git a/.github/workflows/boost_clang_windows.yml b/.github/workflows/boost_clang_windows.yml
index 69160f3..5a9b58e 100644
--- a/.github/workflows/boost_clang_windows.yml
+++ b/.github/workflows/boost_clang_windows.yml
@@ -35,13 +35,13 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Cache Boost
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: '${{ runner.workspace }}/boost/boost_*.tar.gz'
-          key: '${{ runner.os }}-boost-${{ matrix.boost-version }}'
+          key: 'boost-${{ matrix.boost-version }}'
 
       - name: Clean up PATH
-        uses: egor-tensin/cleanup-path@v1
+        uses: egor-tensin/cleanup-path@v2
         if: runner.os == 'Windows'
 
       - name: Set common variables
diff --git a/.github/workflows/boost_toolsets.yml b/.github/workflows/boost_toolsets.yml
index 8653316..876d0e7 100644
--- a/.github/workflows/boost_toolsets.yml
+++ b/.github/workflows/boost_toolsets.yml
@@ -111,13 +111,13 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Cache Boost
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: '${{ runner.workspace }}/boost/boost_*.tar.gz'
-          key: '${{ runner.os }}-boost-${{ matrix.boost-version }}'
+          key: 'boost-${{ matrix.boost-version }}'
 
       - name: Clean up PATH
-        uses: egor-tensin/cleanup-path@v1
+        uses: egor-tensin/cleanup-path@v2
         if: runner.os == 'Windows'
 
       - name: Set common variables
diff --git a/.github/workflows/ci_appveyor.yml b/.github/workflows/ci_appveyor.yml
index a88dc7d..6b66455 100644
--- a/.github/workflows/ci_appveyor.yml
+++ b/.github/workflows/ci_appveyor.yml
@@ -46,10 +46,10 @@ jobs:
           python-version: '3.x'
 
       - name: Cache Boost
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: C:\projects\boost_*.tar.gz
-          key: '${{ runner.os }}-boost-${{ env.boost_version }}'
+          key: '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 54a9a04..877e885 100644
--- a/.github/workflows/ci_github.yml
+++ b/.github/workflows/ci_github.yml
@@ -46,10 +46,10 @@ jobs:
           python-version: '3.x'
 
       - name: Cache Boost
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: '${{ runner.workspace }}/boost_*.tar.gz'
-          key: '${{ runner.os }}-boost-${{ env.boost_version }}'
+          key: 'boost-${{ 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 c78143a..32123a6 100644
--- a/.github/workflows/ci_travis.yml
+++ b/.github/workflows/ci_travis.yml
@@ -43,10 +43,10 @@ jobs:
           python-version: '3.x'
 
       - name: Cache Boost
-        uses: actions/cache@v2
+        uses: actions/cache@v2.1.4
         with:
           path: '${{ env.HOME }}/boost_*.tar.gz'
-          key: '${{ runner.os }}-boost-${{ env.boost_version }}'
+          key: 'boost-${{ env.boost_version }}'
 
       - name: Build Boost
         run: python -m project.ci.travis.boost -- --with-filesystem
diff --git a/.github/workflows/cygwin_static_libstdc++.yml b/.github/workflows/cygwin_static_libstdc++.yml
index 8964595..36c55c2 100644
--- a/.github/workflows/cygwin_static_libstdc++.yml
+++ b/.github/workflows/cygwin_static_libstdc++.yml
@@ -30,7 +30,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Clean up PATH
-        uses: egor-tensin/cleanup-path@v1
+        uses: egor-tensin/cleanup-path@v2
         if: runner.os == 'Windows'
 
       - name: Set common variables
diff --git a/.github/workflows/example_toolsets.yml b/.github/workflows/example_toolsets.yml
index cb336aa..c4d0eaf 100644
--- a/.github/workflows/example_toolsets.yml
+++ b/.github/workflows/example_toolsets.yml
@@ -75,7 +75,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Clean up PATH
-        uses: egor-tensin/cleanup-path@v1
+        uses: egor-tensin/cleanup-path@v2
         if: runner.os == 'Windows'
 
       - name: Set common variables