diff --git a/Cargo.lock b/Cargo.lock
index 87c3773a747..00125e63741 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -404,7 +404,7 @@ dependencies = [
  "tempfile",
  "thiserror 1.0.69",
  "time",
- "toml 0.8.19",
+ "toml",
  "toml_edit 0.22.22",
  "tracing",
  "tracing-chrome",
@@ -565,7 +565,7 @@ dependencies = [
  "serde-untagged",
  "serde-value",
  "thiserror 1.0.69",
- "toml 0.8.19",
+ "toml",
  "unicode-xid",
  "url",
 ]
@@ -1070,7 +1070,7 @@ dependencies = [
  "petgraph",
  "rayon",
  "serde",
- "toml 0.5.11",
+ "toml",
 ]
 
 [[package]]
@@ -2285,7 +2285,7 @@ dependencies = [
  "smallvec",
  "static_assertions",
  "target-spec",
- "toml 0.5.11",
+ "toml",
 ]
 
 [[package]]
@@ -2324,7 +2324,7 @@ dependencies = [
  "semver",
  "serde",
  "serde_json",
- "toml 0.5.11",
+ "toml",
 ]
 
 [[package]]
@@ -2356,7 +2356,7 @@ dependencies = [
  "serde_json",
  "syn 2.0.90",
  "textwrap 0.16.0",
- "toml 0.5.11",
+ "toml",
  "winapi",
  "windows-sys 0.52.0",
 ]
@@ -2386,7 +2386,7 @@ dependencies = [
  "serde",
  "tabular",
  "target-spec",
- "toml 0.5.11",
+ "toml",
  "toml_edit 0.17.1",
  "twox-hash",
 ]
@@ -4007,7 +4007,7 @@ dependencies = [
  "serde_json",
  "target-lexicon",
  "test-case",
- "toml 0.5.11",
+ "toml",
  "unicode-ident",
 ]
 
@@ -4224,22 +4224,13 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
-[[package]]
-name = "toml"
-version = "0.5.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4f7f0dd8d50a853a531c426359045b1998f04219d88799810762cd4ad314234"
-dependencies = [
- "indexmap 1.9.3",
- "serde",
-]
-
 [[package]]
 name = "toml"
 version = "0.8.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1ed1f98e3fdc28d6d910e6737ae6ab1a93bf1985935a1193e68f93eeb68d24e"
 dependencies = [
+ "indexmap 2.3.0",
  "serde",
  "serde_spanned",
  "toml_datetime 0.6.8",
diff --git a/guppy-summaries/Cargo.toml b/guppy-summaries/Cargo.toml
index f322a4b18c8..326814a605c 100644
--- a/guppy-summaries/Cargo.toml
+++ b/guppy-summaries/Cargo.toml
@@ -29,7 +29,7 @@ ahash = "0.8.11"
 camino = { version = "1.1.9", features = ["serde1"] }
 cfg-if = "1.0.0"
 diffus = "0.10.0"
-toml = { version = "0.5.11", features = ["preserve_order"] }
+toml = { version = "0.8.19", features = ["preserve_order"] }
 semver = { version = "1.0.23", features = ["serde"] }
 serde = { version = "1.0.215", features = ["derive"] }
 guppy-workspace-hack.workspace = true
diff --git a/guppy/Cargo.toml b/guppy/Cargo.toml
index 4b1b7b35eec..831b328ee07 100644
--- a/guppy/Cargo.toml
+++ b/guppy/Cargo.toml
@@ -51,7 +51,7 @@ serde_json = "1.0.133"
 smallvec = "1.13.2"
 static_assertions = "1.1.0"
 target-spec = { version = "3.2.2", path = "../target-spec" }
-toml = { version = "0.5.11", optional = true, features = ["preserve_order"] }
+toml = { version = "0.8.19", optional = true, features = ["preserve_order"] }
 guppy-workspace-hack.workspace = true
 
 [dev-dependencies]
diff --git a/target-spec/Cargo.toml b/target-spec/Cargo.toml
index 69aaa0901df..3c2541b0390 100644
--- a/target-spec/Cargo.toml
+++ b/target-spec/Cargo.toml
@@ -30,7 +30,7 @@ guppy-workspace-hack.workspace = true
 
 [dev-dependencies]
 test-case = "3.3.1"
-toml = "0.5.11"
+toml = "0.8.19"
 
 [features]
 custom = ["dep:serde", "dep:serde_json"]
diff --git a/tools/determinator/Cargo.toml b/tools/determinator/Cargo.toml
index 2a311b91012..3512de9ad4a 100644
--- a/tools/determinator/Cargo.toml
+++ b/tools/determinator/Cargo.toml
@@ -38,7 +38,7 @@ petgraph = { version = "0.6.5", default-features = false, features = [
 ] }
 rayon = "1.10.0"
 serde = { version = "1.0.215", features = ["derive"] }
-toml = "0.5.11"
+toml = "0.8.19"
 guppy-workspace-hack.workspace = true
 
 [dev-dependencies]
diff --git a/tools/hakari/Cargo.toml b/tools/hakari/Cargo.toml
index 39e2483c974..36733ef584d 100644
--- a/tools/hakari/Cargo.toml
+++ b/tools/hakari/Cargo.toml
@@ -41,7 +41,7 @@ rayon = "1.10.0"
 serde = { version = "1.0.215", features = ["derive"], optional = true }
 tabular = { version = "0.2.0", features = ["ansi-cell"], optional = true }
 target-spec = { version = "3.2.2", path = "../../target-spec" }
-toml = { version = "0.5.11", optional = true }
+toml = { version = "0.8.19", optional = true }
 toml_edit = "0.17.1"
 twox-hash = { version = "1.6.3", default-features = false }
 guppy-workspace-hack.workspace = true
diff --git a/workspace-hack/Cargo.toml b/workspace-hack/Cargo.toml
index 3242f7f4f28..b64b983a651 100644
--- a/workspace-hack/Cargo.toml
+++ b/workspace-hack/Cargo.toml
@@ -36,7 +36,7 @@ regex-syntax = { version = "0.8.2" }
 serde = { version = "1.0.215", features = ["alloc", "derive"] }
 serde_json = { version = "1.0.133", features = ["unbounded_depth"] }
 textwrap = { version = "0.16.0" }
-toml = { version = "0.5.11", features = ["preserve_order"] }
+toml = { version = "0.8.19", features = ["preserve_order"] }
 
 [build-dependencies]
 proc-macro2 = { version = "1.0.92" }