diff --git a/src/ray/raylet/scheduling_resources.cc b/src/ray/raylet/scheduling_resources.cc
index cdc17307755c..923e6aad9d85 100644
--- a/src/ray/raylet/scheduling_resources.cc
+++ b/src/ray/raylet/scheduling_resources.cc
@@ -18,7 +18,8 @@ FractionalResourceQuantity::FractionalResourceQuantity(double resource_quantity)
   RAY_CHECK(resource_quantity >= 0) << "Resource capacity, " << resource_quantity
                                     << ", should be nonnegative.";
 
-  resource_quantity_ = static_cast<int>(resource_quantity * kResourceConversionFactor);
+  resource_quantity_ =
+      static_cast<int64_t>(resource_quantity * kResourceConversionFactor);
 }
 
 const FractionalResourceQuantity FractionalResourceQuantity::operator+(
diff --git a/src/ray/raylet/scheduling_resources.h b/src/ray/raylet/scheduling_resources.h
index 9f64ddae6b45..9e3a2a64ce4a 100644
--- a/src/ray/raylet/scheduling_resources.h
+++ b/src/ray/raylet/scheduling_resources.h
@@ -58,7 +58,7 @@ class FractionalResourceQuantity {
  private:
   /// The resource quantity represented as 1/kResourceConversionFactor-th of a
   /// unit.
-  int resource_quantity_;
+  int64_t resource_quantity_;
 };
 
 /// \class ResourceSet