diff --git a/compiler/rustc_target/src/abi/call/msp430.rs b/compiler/rustc_target/src/abi/call/msp430.rs
index 7af04b9cf481b..0ba73657b5b08 100644
--- a/compiler/rustc_target/src/abi/call/msp430.rs
+++ b/compiler/rustc_target/src/abi/call/msp430.rs
@@ -1,5 +1,5 @@
 // Reference: MSP430 Embedded Application Binary Interface
-// https://web.archive.org/web/20191221205752/http://www.ti.com/lit/an/slaa534/slaa534.pdf
+// https://www.ti.com/lit/an/slaa534a/slaa534a.pdf
 
 use crate::abi::call::{ArgAbi, FnAbi};
 
diff --git a/src/test/ui/nullable-pointer-iotareduction.rs b/src/test/ui/nullable-pointer-iotareduction.rs
index 7f84450e6217e..568c3e144be2c 100644
--- a/src/test/ui/nullable-pointer-iotareduction.rs
+++ b/src/test/ui/nullable-pointer-iotareduction.rs
@@ -4,7 +4,7 @@
 
 // Iota-reduction is a rule in the Calculus of (Co-)Inductive Constructions,
 // which "says that a destructor applied to an object built from a constructor
-// behaves as expected".  -- https://web.archive.org/web/20100531091244/http://coq.inria.fr/doc/Reference-Manual006.html
+// behaves as expected".  -- https://coq.inria.fr/doc/language/core/conversion.html#iota-reduction
 //
 // It's a little more complicated here, because of pointers and regions and
 // trying to get assert failure messages that at least identify which case