diff --git a/rust-version b/rust-version
index fae9b1d599a..52b6685715d 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-9224be5fa39f6170f6e046342976efee5453a1ff
+fe0a415b4ba3310c2263f07e0253e2434310299c
diff --git a/src/fn_call.rs b/src/fn_call.rs
index 29a34a69686..1fd10ff3850 100644
--- a/src/fn_call.rs
+++ b/src/fn_call.rs
@@ -722,6 +722,7 @@ pub trait EvalContextExt<'a, 'mir, 'tcx: 'a + 'mir>: crate::MiriEvalContextExt<'
             // Windows API stubs.
             // HANDLE = isize
             // DWORD = ULONG = u32
+            // BOOL = i32
             "GetProcessHeap" => {
                 // Just fake a HANDLE
                 this.write_scalar(Scalar::from_int(1, this.pointer_size()), dest)?;
@@ -739,6 +740,7 @@ pub trait EvalContextExt<'a, 'mir, 'tcx: 'a + 'mir>: crate::MiriEvalContextExt<'
                 let _flags = this.read_scalar(args[1])?.to_u32()?;
                 let ptr = this.read_scalar(args[2])?.not_undef()?;
                 this.free(ptr)?;
+                this.write_scalar(Scalar::from_int(1, Size::from_bytes(4)), dest)?;
             }
             "HeapReAlloc" => {
                 let _handle = this.read_scalar(args[0])?.to_isize(this)?;