diff --git a/projects/railway.app/package.yml b/projects/railway.app/package.yml
index 7d6e5af6..06a832b0 100644
--- a/projects/railway.app/package.yml
+++ b/projects/railway.app/package.yml
@@ -7,7 +7,7 @@ versions:
 
 build:
   dependencies:
-    rust-lang.org: ^1.75
+    rust-lang.org: ~1.75 # uses older simd logic
     rust-lang.org/cargo: '*'
   script:
     # 3.5.2 didn't bump version