diff --git a/.github/workflows/ubuntu-clang-latest.yml b/.github/workflows/ubuntu-clang-latest.yml
index 732597b..b86c25e 100644
--- a/.github/workflows/ubuntu-clang-latest.yml
+++ b/.github/workflows/ubuntu-clang-latest.yml
@@ -15,7 +15,8 @@ jobs:
     - uses: actions/checkout@v2
     - name: set up environment
       run: |
-        sudo apt-get install clang gir1.2-glib-2.0 gobject-introspection gtk-doc-tools libgirepository1.0-dev libglib2.0-dev ninja-build python3-setuptools python3-wheel
+        sudo apt update
+        sudo apt install clang gir1.2-glib-2.0 gobject-introspection gtk-doc-tools libgirepository1.0-dev libglib2.0-dev ninja-build python3-setuptools python3-wheel
         sudo pip3 install meson==1.0.0
 
     - name: default build
diff --git a/.github/workflows/ubuntu-gcc-latest.yml b/.github/workflows/ubuntu-gcc-latest.yml
index 3c96b68..a6e9e96 100644
--- a/.github/workflows/ubuntu-gcc-latest.yml
+++ b/.github/workflows/ubuntu-gcc-latest.yml
@@ -15,7 +15,8 @@ jobs:
     - uses: actions/checkout@v2
     - name: set up environment
       run: |
-        sudo apt-get install gcc gir1.2-glib-2.0 gobject-introspection gtk-doc-tools libgirepository1.0-dev libglib2.0-dev ninja-build python3-setuptools python3-wheel
+        sudo apt update
+        sudo apt install gcc gir1.2-glib-2.0 gobject-introspection gtk-doc-tools libgirepository1.0-dev libglib2.0-dev ninja-build python3-setuptools python3-wheel
         sudo pip3 install meson==1.0.0
 
     - name: default build