diff --git a/.forgejo/workflows/build.yaml b/.forgejo/workflows/build.yaml
index f4344d09..5abeb122 100644
--- a/.forgejo/workflows/build.yaml
+++ b/.forgejo/workflows/build.yaml
@@ -60,7 +60,7 @@ jobs:
             docker.io/hexpm/elixir:1.20.1-erlang-29.0.2-debian-trixie-20260518-slim \
             sh -euc '\
               mkdir -p /app && cd /app && tar xf - && \
-              apt-get update -qq && apt-get install -y -qq git curl ca-certificates && \
+              apt-get update -qq && apt-get install -y -qq git curl ca-certificates build-essential && \
               mix local.hex --force && \
               mix local.rebar --force && \
               mix deps.get --only prod && \