diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index 012b793c..50ea838a 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -14,7 +14,7 @@ jobs:
         - /opt/keys:/opt/keys
         - /opt/deps:/opt/deps
     steps:
-      - run: apt update && apt install -y doxygen git graphviz mingw-w64 libgpgme11 gcc-aarch64-linux-gnu zip unzip build-essential docker.io curl clang
+      - run: apt update && apt install -y doxygen git graphviz mingw-w64 libgpgme11 gcc-aarch64-linux-gnu zip unzip build-essential docker.io curl clang file
       - name: check out code
         uses: actions/checkout@v4
         with: