diff --git a/.dagger/src/blumeops_ci/main.py b/.dagger/src/blumeops_ci/main.py
index 8f2373f..b98af9e 100644
--- a/.dagger/src/blumeops_ci/main.py
+++ b/.dagger/src/blumeops_ci/main.py
@@ -47,12 +47,17 @@ class BlumeopsCi:
     async def build_docs(self, src: dagger.Directory, version: str) -> dagger.File:
         """Build changelog then Quartz site. Returns docs tarball."""
         updated_src = await self.build_changelog(src, version)
+        return await self.build_quartz(updated_src, version)
+
+    @function
+    async def build_quartz(self, src: dagger.Directory, version: str) -> dagger.File:
+        """Build Quartz docs site from pre-processed source. Returns docs tarball."""
         return await (
             dag.container()
             .from_("node:22-slim")
             .with_exec(["apt-get", "update", "-qq"])
             .with_exec(["apt-get", "install", "-y", "-qq", "git"])
-            .with_directory("/workspace", updated_src)
+            .with_directory("/workspace", src)
             .with_workdir("/workspace")
             .with_exec(
                 [
diff --git a/.forgejo/workflows/build-blumeops.yaml b/.forgejo/workflows/build-blumeops.yaml
index dca745a..e6930bd 100644
--- a/.forgejo/workflows/build-blumeops.yaml
+++ b/.forgejo/workflows/build-blumeops.yaml
@@ -108,30 +108,14 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Build docs
-        run: |
-          VERSION="${{ steps.version.outputs.version }}"
-          TARBALL="docs-${VERSION}.tar.gz"
-          echo "Building docs via Dagger..."
-          # build-docs calls build_changelog internally (towncrier runs inside
-          # the Dagger container). The host working tree is not modified — only
-          # the tarball is exported. Towncrier runs a second time on the runner
-          # in the next step so that CHANGELOG.md and fragment deletion are
-          # captured in the git commit.
-          dagger call build-docs --src=. --version="$VERSION" \
-            export --path="./$TARBALL"
-          echo "Build complete!"
-          ls -lh "$TARBALL"
-
       - name: Build changelog
         id: changelog
         run: |
           VERSION="${{ steps.version.outputs.version }}"
 
-          # Run towncrier on the runner (not in Dagger) so that CHANGELOG.md
-          # updates and fragment deletions appear in the working tree for the
-          # git commit step. This is intentionally a second towncrier run —
-          # the first happened inside the Dagger build-docs container above.
+          # Run towncrier on the runner so that CHANGELOG.md updates and
+          # fragment deletions appear in the working tree for both the Quartz
+          # build (next step) and the git commit step.
           # Check if there are any changelog fragments
           FRAGMENTS=$(find docs/changelog.d -name "*.md" -not -name ".gitkeep" 2>/dev/null | wc -l)
 
@@ -157,6 +141,19 @@ jobs:
             echo "" > /tmp/release_notes.md
           fi
 
+      - name: Build docs
+        run: |
+          VERSION="${{ steps.version.outputs.version }}"
+          TARBALL="docs-${VERSION}.tar.gz"
+          echo "Building docs via Dagger..."
+          # Towncrier already ran on the runner above, so the working tree
+          # has an up-to-date CHANGELOG.md. build-quartz skips towncrier
+          # and only runs the Quartz static site build.
+          dagger call build-quartz --src=. --version="$VERSION" \
+            export --path="./$TARBALL"
+          echo "Build complete!"
+          ls -lh "$TARBALL"
+
       - name: Create release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/docs/changelog.d/eliminate-double-towncrier.infra.md b/docs/changelog.d/eliminate-double-towncrier.infra.md
new file mode 100644
index 0000000..3c6524d
--- /dev/null
+++ b/docs/changelog.d/eliminate-double-towncrier.infra.md
@@ -0,0 +1 @@
+Eliminate double towncrier run in release workflow — changelog is now built once on the runner, then the pre-processed source tree is passed to a new `build_quartz` Dagger function for the Quartz site build only.