diff --git a/.github/workflows/unit_test_4gpu.yaml b/.github/workflows/unit_test_4gpu.yaml
index 65116b05..b71e545d 100644
--- a/.github/workflows/unit_test_4gpu.yaml
+++ b/.github/workflows/unit_test_4gpu.yaml
@@ -23,7 +23,7 @@ jobs:
         # conda create -n "test" python=3.10
         # conda activate test
       script: |
-        apt install -y wget
+        apt update && apt install -y wget
         mkdir -p ~/miniconda3
         wget https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh -O ~/miniconda3/miniconda.sh
         bash ~/miniconda3/miniconda.sh -b -u -p ~/miniconda3