diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 48ead96dd..2e88a9a19 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -30,7 +30,7 @@ jobs:
             alpine:3.20 sh -c '
               set -ex
               apk add --no-cache \
-                build-base bison flex gperf \
+                build-base bison flex flex-dev gperf \
                 tcl-dev readline-dev zlib-dev libffi-dev \
                 libdwarf-dev elfutils-dev \
                 python3 python3-dev py3-pip py3-setuptools py3-wheel \