diff --git a/.github/workflows/asan.yml b/.github/workflows/asan.yml
index 36a783f..fece1dd 100644
--- a/.github/workflows/asan.yml
+++ b/.github/workflows/asan.yml
@@ -9,7 +9,7 @@ jobs:
       CC: gcc
     steps:
       - uses: actions/checkout@v3
-      - run: sudo apt install -y make gcc
+      - run: sudo apt-get update && sudo apt install -y make gcc
       - run: gcc --version
       - run: make CFLAGS="-g -fno-omit-frame-pointer -fsanitize=address" LDFLAGS="-fsanitize=address"
       # if timeouts (return code 124), consider it a success
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 368e2d7..98258ad 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Build
-        run: sudo apt-get install gcc-multilib g++-multilib && make -j
+        run: sudo apt-get update && sudo apt-get install gcc-multilib g++-multilib && make -j
 
   macos:
     runs-on: macos-latest
@@ -27,7 +27,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Build
-        run: sudo apt-get install gcc-multilib g++-multilib && make -j
+        run: sudo apt-get update && sudo apt-get install gcc-multilib g++-multilib && make -j
       # this is too flakey in github actions
       #- name: Run tests
       #  run: python3 test.py