diff --git a/libsupport_zynq/Cargo.toml b/libsupport_zynq/Cargo.toml
index 9adf2f9..d1b1fef 100644
--- a/libsupport_zynq/Cargo.toml
+++ b/libsupport_zynq/Cargo.toml
@@ -19,7 +19,7 @@ default = ["panic_handler", "dummy_irq_handler", "dummy_fiq_handler"]
 
 [dependencies]
 r0 = "1"
-compiler_builtins = "=0.1.39"
+compiler_builtins = { version = "0.1", features = ["no-f16-f128"] }
 linked_list_allocator = { version = "0.8", default-features = false, features = ["const_mut_refs"] }
 libregister = { path = "../libregister" }
 libcortex_a9 = { path = "../libcortex_a9" }