diff --git a/.github/workflows/release-nightly.yml b/.github/workflows/release-nightly.yml
index 100a044b..fa371efa 100644
--- a/.github/workflows/release-nightly.yml
+++ b/.github/workflows/release-nightly.yml
@@ -29,8 +29,12 @@ jobs:
         run:  echo "DOCSPELL_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
       - name: sbt ci ${{ github.ref }}
         run: sbt ci
+        env:
+          SBT_OPTS: "-Xmx2G -Xss4m"
       - name: sbt make-pkg (${{ env.DOCSPELL_VERSION }})
         run: sbt make-pkg
+        env:
+          SBT_OPTS: "-Xmx2G -Xss4m"
       - uses: "marvinpinto/action-automatic-releases@latest"
         with:
           repo_token: "${{ secrets.GITHUB_TOKEN }}"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 411e57fc..49d33cb9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -29,6 +29,8 @@ jobs:
         run:  echo "DOCSPELL_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
       - name: sbt make-pkg (${{ env.DOCSPELL_VERSION }})
         run: sbt make-pkg
+        env:
+          SBT_OPTS: "-Xmx2G -Xss4m"
       - uses: meeDamian/github-release@2.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}