diff --git a/Cargo.lock b/Cargo.lock
index 171ab076..4e1de128 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1018,9 +1018,9 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 
 [[package]]
 name = "regress"
-version = "0.10.5"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2057b2325e68a893284d1538021ab90279adac1139957ca2a74426c6f118fb48"
+checksum = "07948de9abc2e83adbeb7543c061a5ddaf7d944afcafbdd6e6b39aeacd40504b"
 dependencies = [
  "hashbrown 0.16.0",
  "memchr",
diff --git a/Cargo.toml b/Cargo.toml
index 2ede71b5..425c92a6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ log = { version = "0.4.6", features = ["std"] }
 loot-condition-interpreter = "6"
 petgraph = ">= 0.6, < 0.9"
 rayon = "1"
-regress = "0.10.5"
+regress = ">= 0.10.5, < 0.12"
 rustc-hash = ">= 1.0.0, < 3"
 saphyr = ">= 0.0.5, < 0.0.7"
 unicase = "2.6.0"
diff --git a/supply-chain/audits.toml b/supply-chain/audits.toml
index 65e8e51d..05d6daaa 100644
--- a/supply-chain/audits.toml
+++ b/supply-chain/audits.toml
@@ -122,6 +122,11 @@ who = "Oliver Hamlet <git@ortham.net>"
 criteria = "safe-to-deploy"
 delta = "0.10.4 -> 0.10.5"
 
+[[audits.regress]]
+who = "Oliver Hamlet <git@ortham.net>"
+criteria = "safe-to-deploy"
+delta = "0.10.5 -> 0.11.0"
+
 [[audits.slab]]
 who = "Oliver Hamlet <git@ortham.net>"
 criteria = "safe-to-deploy"
diff --git a/supply-chain/config.toml b/supply-chain/config.toml
index 25253238..4c5f405c 100644
--- a/supply-chain/config.toml
+++ b/supply-chain/config.toml
@@ -117,12 +117,6 @@ criteria = "safe-to-deploy"
 version = "0.0.5"
 criteria = "safe-to-deploy"
 
-[[exemptions.errno]]
-version = "0.3.14"
-criteria = "safe-to-run"
-suggest = false
-notes = "At time of review this was only built if targeting WASI, which is not an intended target."
-
 [[exemptions.fixedbitset]]
 version = "0.5.7"
 criteria = "safe-to-deploy"
@@ -229,10 +223,6 @@ criteria = "safe-to-deploy"
 version = "1.11.0"
 criteria = "safe-to-deploy"
 
-[[exemptions.proc-macro2]]
-version = "1.0.101"
-criteria = "safe-to-deploy"
-
 [[exemptions.pyo3]]
 version = "0.25.1"
 criteria = "safe-to-deploy"
diff --git a/supply-chain/imports.lock b/supply-chain/imports.lock
index 31093bc8..9499a902 100644
--- a/supply-chain/imports.lock
+++ b/supply-chain/imports.lock
@@ -472,6 +472,119 @@ delta = "0.2.9 -> 0.2.13"
 notes = "Audited at https://fxrev.dev/946396"
 aggregated-from = "https://fuchsia.googlesource.com/fuchsia/+/refs/heads/main/third_party/rust_crates/supply-chain/audits.toml?format=TEXT"
 
+[[audits.google.audits.proc-macro2]]
+who = "Lukasz Anforowicz <lukasza@chromium.org>"
+criteria = "safe-to-deploy"
+version = "1.0.78"
+notes = """
+Grepped for "crypt", "cipher", "fs", "net" - there were no hits
+(except for a benign "fs" hit in a doc comment)
+
+Notes from the `unsafe` review can be found in https://crrev.com/c/5385745.
+"""
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Adrian Taylor <adetaylor@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.78 -> 1.0.79"
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Adrian Taylor <adetaylor@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.79 -> 1.0.80"
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Dustin J. Mitchell <djmitche@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.80 -> 1.0.81"
+notes = "Comment changes only"
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "danakj <danakj@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.81 -> 1.0.82"
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Dustin J. Mitchell <djmitche@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.82 -> 1.0.83"
+notes = "Substantive change is replacing String with Box<str>, saving memory."
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Lukasz Anforowicz <lukasza@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.83 -> 1.0.84"
+notes = "Only doc comment changes in `src/lib.rs`."
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "danakj@chromium.org"
+criteria = "safe-to-deploy"
+delta = "1.0.84 -> 1.0.85"
+notes = "Test-only changes."
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Lukasz Anforowicz <lukasza@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.85 -> 1.0.86"
+notes = """
+Comment-only changes in `build.rs`.
+Reordering of `Cargo.toml` entries.
+Just bumping up the version number in `lib.rs`.
+Config-related changes in `test_size.rs`.
+"""
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "danakj <danakj@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.86 -> 1.0.87"
+notes = "No new unsafe interactions."
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Liza Burakova <liza@chromium.org"
+criteria = "safe-to-deploy"
+delta = "1.0.87 -> 1.0.89"
+notes = """
+Biggest change is adding error handling in build.rs.
+Some config related changes in wrapper.rs.
+"""
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Lukasz Anforowicz <lukasza@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.89 -> 1.0.92"
+notes = """
+I looked at the delta and the previous discussion at
+https://chromium-review.googlesource.com/c/chromium/src/+/5385745/3#message-a8e2813129fa3779dab15acede408ee26d67b7f3
+and the changes look okay to me (including the `unsafe fn from_str_unchecked`
+changes in `wrapper.rs`).
+"""
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Lukasz Anforowicz <lukasza@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.92 -> 1.0.93"
+notes = "No `unsafe`-related changes."
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
+[[audits.google.audits.proc-macro2]]
+who = "Daniel Cheng <dcheng@chromium.org>"
+criteria = "safe-to-deploy"
+delta = "1.0.93 -> 1.0.94"
+notes = "Minor doc changes and clippy lint adjustments+fixes."
+aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
+
 [[audits.google.audits.quote]]
 who = "Lukasz Anforowicz <lukasza@chromium.org>"
 criteria = "safe-to-deploy"
@@ -869,7 +982,11 @@ who = "David Cook <dcook@divviup.org>"
 criteria = "safe-to-deploy"
 delta = "1.12.1 -> 1.13.0"
 
-[audits.loot.audits]
+[[audits.loot.audits.proc-macro2]]
+who = "Oliver Hamlet <git@ortham.net>"
+criteria = "safe-to-deploy"
+delta = "1.0.95 -> 1.0.101"
+aggregated-from = "https://raw.githubusercontent.com/loot/metadata-validator/refs/heads/master/supply-chain/audits.toml"
 
 [[audits.mozilla.wildcard-audits.encoding_rs]]
 who = "Henri Sivonen <hsivonen@hsivonen.fi>"
@@ -1076,12 +1193,25 @@ delta = "2.6.0 -> 2.8.1"
 notes = "Update to Unicode 15.0.0"
 aggregated-from = "https://raw.githubusercontent.com/mozilla/glean/main/supply-chain/audits.toml"
 
+[[audits.ortham.audits.errno]]
+who = "Oliver Hamlet <git@ortham.net>"
+criteria = "safe-to-deploy"
+version = "0.3.14"
+aggregated-from = "https://raw.githubusercontent.com/Ortham/svg_to_ico/refs/heads/master/supply-chain/audits.toml"
+
 [[audits.ortham.audits.keyvalues-parser]]
 who = "Oliver Hamlet <git@ortham.net>"
 criteria = "safe-to-deploy"
 delta = "0.2.0 -> 0.2.1"
 aggregated-from = "https://raw.githubusercontent.com/Ortham/libloadorder/refs/heads/master/supply-chain/audits.toml"
 
+[[audits.ortham.audits.proc-macro2]]
+who = "Oliver Hamlet <git@ortham.net>"
+criteria = "safe-to-deploy"
+delta = "1.0.94 -> 1.0.95"
+notes = "The only changes were to reflect changes in semver-exempt APIs to support nightly Rust changes."
+aggregated-from = "https://raw.githubusercontent.com/Ortham/esplugin/refs/heads/master/supply-chain/audits.toml"
+
 [[audits.ortham.audits.proc-macro2]]
 who = "Oliver Hamlet <git@ortham.net>"
 criteria = "safe-to-deploy"