diff --git a/no_atomic_cas.rs b/no_atomic_cas.rs
index 629d3260d..16ec628cd 100644
--- a/no_atomic_cas.rs
+++ b/no_atomic_cas.rs
@@ -3,6 +3,7 @@
 
 const NO_ATOMIC_CAS: &[&str] = &[
     "armv4t-none-eabi",
+    "armv5te-none-eabi",
     "avr-unknown-gnu-atmega328",
     "bpfeb-unknown-none",
     "bpfel-unknown-none",
@@ -11,5 +12,6 @@ const NO_ATOMIC_CAS: &[&str] = &[
     "riscv32im-unknown-none-elf",
     "riscv32imc-unknown-none-elf",
     "thumbv4t-none-eabi",
+    "thumbv5te-none-eabi",
     "thumbv6m-none-eabi",
 ];