diff --git a/README.md b/README.md
index 33a577a..b29a450 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 # `⚙️ cfg-expr`
 
-**A parser and evaluator for Rust `cfg()` expressions. Targets as of [Rust 1.64.0](https://forge.rust-lang.org/release/platform-support.html) are supported.**
+**A parser and evaluator for Rust `cfg()` expressions. Targets as of [Rust 1.66.0](https://forge.rust-lang.org/release/platform-support.html) are supported.**
 
 [![Build Status](https://github.com/EmbarkStudios/cfg-expr/workflows/CI/badge.svg)](https://github.com/EmbarkStudios/cfg-expr/actions?workflow=CI)
 [![Crates.io](https://img.shields.io/crates/v/cfg-expr.svg)](https://crates.io/crates/cfg-expr)
@@ -22,7 +22,7 @@
 
 `cfg-expr` is a crate that can be used to parse and evaluate Rust `cfg()` expressions, both as declarable in Rust code itself, as well in cargo manifests' `[target.'cfg()'.dependencies]` sections.
 
-It contains a list of all builtin targets known to rustc as of `1.58.0` that can be used to determine if a particular cfg expression is satisfiable.
+It contains a list of all builtin targets known to rustc as of `1.66.0` that can be used to determine if a particular cfg expression is satisfiable.
 
 ```rust
 use cfg_expr::{targets::get_builtin_target_by_triple, Expression, Predicate};
diff --git a/src/targets.rs b/src/targets.rs
index ba91d16..e6c0d72 100644
--- a/src/targets.rs
+++ b/src/targets.rs
@@ -372,7 +372,7 @@ pub fn get_builtin_target_by_triple(triple: &str) -> Option<&'static TargetInfo>
 /// versions.
 ///
 /// ```
-/// assert_eq!("1.65.0", cfg_expr::targets::rustc_version());
+/// assert_eq!("1.66.0", cfg_expr::targets::rustc_version());
 /// ```
 pub fn rustc_version() -> &'static str {
     builtins::RUSTC_VERSION
diff --git a/src/targets/builtins.rs b/src/targets/builtins.rs
index e0e0949..ecf6706 100644
--- a/src/targets/builtins.rs
+++ b/src/targets/builtins.rs
@@ -10,7 +10,7 @@
 
 use super::*;
 
-pub(crate) const RUSTC_VERSION: &str = "1.65.0";
+pub(crate) const RUSTC_VERSION: &str = "1.66.0";
 
 pub const ALL_BUILTINS: &[TargetInfo] = &[
     TargetInfo {
@@ -507,6 +507,19 @@ pub const ALL_BUILTINS: &[TargetInfo] = &[
         has_atomics: HasAtomics::atomic_8_16_32_ptr,
         panic: Panic::unwind,
     },
+    TargetInfo {
+        triple: Triple::new_const("armv5te-none-eabi"),
+        os: None,
+        abi: None,
+        arch: Arch::arm,
+        env: None,
+        vendor: Some(Vendor::unknown),
+        families: Families::new_const(&[]),
+        pointer_width: 32,
+        endian: Endian::little,
+        has_atomics: HasAtomics::new_const(&[]),
+        panic: Panic::abort,
+    },
     TargetInfo {
         triple: Triple::new_const("armv5te-unknown-linux-gnueabi"),
         os: Some(Os::linux),
@@ -1885,6 +1898,19 @@ pub const ALL_BUILTINS: &[TargetInfo] = &[
         has_atomics: HasAtomics::new_const(&[]),
         panic: Panic::abort,
     },
+    TargetInfo {
+        triple: Triple::new_const("thumbv5te-none-eabi"),
+        os: None,
+        abi: None,
+        arch: Arch::arm,
+        env: None,
+        vendor: Some(Vendor::unknown),
+        families: Families::new_const(&[]),
+        pointer_width: 32,
+        endian: Endian::little,
+        has_atomics: HasAtomics::new_const(&[]),
+        panic: Panic::abort,
+    },
     TargetInfo {
         triple: Triple::new_const("thumbv6m-none-eabi"),
         os: None,