diff --git a/pyproject.toml b/pyproject.toml
index 7fe7295ebe..1f8a60d9bd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -101,7 +101,7 @@ dependencies = [
 [project.optional-dependencies]
 "xformers" = [
   # Core generation dependencies, pinned for reproducible builds.
-  "xformers==0.0.25post1; sys_platform!='darwin'",
+  "xformers==0.0.28.post1; sys_platform!='darwin'",
   # Auxiliary dependencies, pinned only if necessary.
   "triton; sys_platform=='linux'",
 ]