diff --git a/Cargo.lock b/Cargo.lock
index d0d5d3e0f..15a846fa7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -918,9 +918,9 @@ dependencies = [
 
 [[package]]
 name = "rpds"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4ef5140bcb576bfd6d56cd2de709a7d17851ac1f3805e67fe9d99e42a11821f"
+checksum = "66262ea963eff99163e6b741fbc3417a52cc13074728c1047e9911789df9b000"
 dependencies = [
  "archery",
 ]
diff --git a/fathom/Cargo.toml b/fathom/Cargo.toml
index bb5c98618..9c81e2421 100644
--- a/fathom/Cargo.toml
+++ b/fathom/Cargo.toml
@@ -26,7 +26,7 @@ itertools = "0.10"
 lalrpop-util = "0.19.5"
 logos = "0.12"
 pretty = "0.11.2"
-rpds = "0.11"
+rpds = "0.12.0"
 scoped-arena = "0.3"
 string-interner = "0.14.0"
 termsize = "0.1.6"