diff --git a/.github/workflows/preview-release.yaml b/.github/workflows/preview-release.yaml
index 0764837f..3eaa5b19 100644
--- a/.github/workflows/preview-release.yaml
+++ b/.github/workflows/preview-release.yaml
@@ -14,6 +14,7 @@ env:
   GEM_HOME: /tmp/.bundle
   GEM_PATH: /tmp/.bundle
   TERM: xterm256
+  FORCE_FULL_RUBY_BUILD: 1
 
 jobs:
   bump-tag:
diff --git a/librubyfmt/build.rs b/librubyfmt/build.rs
index 401698b9..296b7490 100644
--- a/librubyfmt/build.rs
+++ b/librubyfmt/build.rs
@@ -47,7 +47,8 @@ fn main() -> Output {
 
     // Only rerun this build if the ruby_checkout has changed
     match old_checkout_sha {
-        Some(old_sha) if old_sha == new_checkout_sha => {}
+        Some(old_sha)
+            if old_sha == new_checkout_sha && env::var("FORCE_FULL_RUBY_BUILD").is_err() => {}
         _ => {
             make_configure(&ruby_checkout_path)?;
             run_configure(&ruby_checkout_path)?;