diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5fa200f..d7b344c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,6 +9,8 @@ jobs:
   build_on_linux:
     runs-on: ubuntu-latest
     steps:
+      - name: update apt
+        run: sudo apt-get update
       - name: Install libarchive-tools
         run: sudo apt-get install -y libarchive-tools
       - uses: actions/checkout@master
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 541e1e5..8bda4ca 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,6 +9,8 @@ jobs:
   build_on_linux:
     runs-on: ubuntu-latest
     steps:
+      - name: update apt
+        run: sudo apt-get update
       - name: Install libarchive-tools
         run: sudo apt-get install -y libarchive-tools
       - uses: actions/checkout@master