diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2ed35696..514dd2f6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,7 +38,12 @@ jobs:
       - run: uv pip install --system -U mkdocs-material mkdocstrings-python
         env:
           UV_EXTRA_INDEX_URL: ${{ secrets.UV_EXTRA_INDEX_URL }}
-      - run: mkdocs build
+      - run: |
+          if [[ -n "${{ github.head_ref }}" && "${{ github.repository }}" != "${{ github.event.pull_request.head.repo.full_name }}" ]]; then
+            mkdocs build --no-strict
+          else
+            mkdocs build
+          fi
 
   test:
     name: test on ${{ matrix.python-version }}
diff --git a/pyproject.toml b/pyproject.toml
index d97b30b4..ea63c468 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -140,6 +140,14 @@ allow-direct-references = true
 [tool.hatch.build.targets.wheel]
 packages = ["logfire"]
 
+[tool.hatch.build.targets.sdist]
+include = [
+    "/README.md",
+    "/Makefile",
+    "/logfire",
+    "/tests",
+]
+
 # https://beta.ruff.rs/docs/configuration/
 [tool.ruff]
 line-length = 120