diff --git a/.github/workflows/build-site.yml b/.github/workflows/build-site.yml
index dc551a94..71a1b522 100644
--- a/.github/workflows/build-site.yml
+++ b/.github/workflows/build-site.yml
@@ -56,4 +56,5 @@ jobs:
           directory: "_site"
           arguments: |
             --ignore-files "/.+\/_posts\/README.md"
+            --ignore-urls "/^https?:\/\/(www\.)?pyopensci\.org\//"
             --checks "Images,Scripts"
diff --git a/_config.yml b/_config.yml
index cd665920..96075b61 100644
--- a/_config.yml
+++ b/_config.yml
@@ -165,7 +165,6 @@ footer:
 include:
   - .htaccess
   - _pages
-  - _posts
 exclude:
   - "*.sublime-project"
   - "*.sublime-workspace"
diff --git a/lychee.toml b/lychee.toml
index bf876392..9a5fd5d9 100644
--- a/lychee.toml
+++ b/lychee.toml
@@ -60,4 +60,7 @@ include_verbatim = false
 # Regex excludes. Plain-domain skips belong in .lycheeignore.
 exclude = [
     'zenodo\.org',
+    # Self-references to the deployed site lag the build, producing false
+    # 404s for new pages. Internal links are validated via relative paths.
+    '^https?://(www\.)?pyopensci\.org/',
 ]