diff --git a/Cargo.lock b/Cargo.lock
index 022c0278e0..05cee74700 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2407,9 +2407,9 @@ dependencies = [
 
 [[package]]
 name = "regalloc2"
-version = "0.5.1"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "300d4fbfb40c1c66a78ba3ddd41c1110247cf52f97b87d0f2fc9209bd49b030c"
+checksum = "abdf64625ea14dd2a89d8076aaa4059a8380163dce34b978ddda25c403afe241"
 dependencies = [
  "fxhash",
  "log",
diff --git a/cranelift/codegen/Cargo.toml b/cranelift/codegen/Cargo.toml
index bb42516188..deae0cb782 100644
--- a/cranelift/codegen/Cargo.toml
+++ b/cranelift/codegen/Cargo.toml
@@ -25,7 +25,7 @@ serde = { version = "1.0.94", features = ["derive"], optional = true }
 bincode = { version = "1.2.1", optional = true }
 gimli = { workspace = true, features = ["write"], optional = true }
 smallvec = { workspace = true }
-regalloc2 = { version = "0.5.1", features = ["checker"] }
+regalloc2 = { version = "0.6.0", features = ["checker"] }
 souper-ir = { version = "2.1.0", optional = true }
 sha2 = { version = "0.10.2", optional = true }
 # It is a goal of the cranelift-codegen crate to have minimal external dependencies.
diff --git a/cranelift/codegen/src/machinst/vcode.rs b/cranelift/codegen/src/machinst/vcode.rs
index 1e787ed301..81aaf54862 100644
--- a/cranelift/codegen/src/machinst/vcode.rs
+++ b/cranelift/codegen/src/machinst/vcode.rs
@@ -27,7 +27,7 @@ use crate::trace;
 use crate::CodegenError;
 use crate::ValueLocRange;
 use regalloc2::{
-    Edit, Function as RegallocFunction, InstOrEdit, InstRange, Operand, OperandKind, PReg, PRegSet,
+    Edit, Function as RegallocFunction, InstOrEdit, InstRange, Operand, OperandKind, PRegSet,
     RegClass, VReg,
 };
 
@@ -1316,10 +1316,6 @@ impl<I: VCodeInst> RegallocFunction for VCode<I> {
         &self.debug_value_labels[..]
     }
 
-    fn is_pinned_vreg(&self, vreg: VReg) -> Option<PReg> {
-        pinned_vreg_to_preg(vreg)
-    }
-
     fn spillslot_size(&self, regclass: RegClass) -> usize {
         self.abi.get_spillslot_size(regclass) as usize
     }
diff --git a/supply-chain/audits.toml b/supply-chain/audits.toml
index ff6fff9bdb..4947df6480 100644
--- a/supply-chain/audits.toml
+++ b/supply-chain/audits.toml
@@ -563,6 +563,12 @@ criteria = "safe-to-deploy"
 delta = "0.5.0 -> 0.5.1"
 notes = "The Bytecode Alliance is the author of this crate."
 
+[[audits.regalloc2]]
+who = "Trevor Elliott <telliott@fastly.com>"
+criteria = "safe-to-deploy"
+delta = "0.5.1 -> 0.6.0"
+notes = "The Bytecode Alliance is the author of this crate."
+
 [[audits.rustc-demangle]]
 who = "Alex Crichton <alex@alexcrichton.com>"
 criteria = "safe-to-deploy"
diff --git a/winch/codegen/Cargo.toml b/winch/codegen/Cargo.toml
index 91d468c08b..ca9d0d97f0 100644
--- a/winch/codegen/Cargo.toml
+++ b/winch/codegen/Cargo.toml
@@ -17,7 +17,7 @@ target-lexicon = { workspace = true, features = ["std"] }
 # In the next iteration we'll factor out the common bits so that they can be consumed
 # by Cranelift and Winch.
 cranelift-codegen = { workspace = true }
-regalloc2 = "0.5.1"
+regalloc2 = "0.6.0"
 
 [features]
 x64 = ["cranelift-codegen/x86"]