diff --git a/Cargo.lock b/Cargo.lock
index 5ffb3b32bfa6..fe65d861ba92 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -872,7 +872,7 @@ dependencies = [
  "petgraph",
  "rayon",
  "serde",
- "toml 0.5.11",
+ "toml 0.8.2",
 ]
 
 [[package]]
@@ -1942,7 +1942,7 @@ dependencies = [
  "smallvec",
  "static_assertions",
  "target-spec",
- "toml 0.5.11",
+ "toml 0.8.2",
 ]
 
 [[package]]
@@ -1980,7 +1980,7 @@ dependencies = [
  "semver",
  "serde",
  "serde_json",
- "toml 0.5.11",
+ "toml 0.8.2",
 ]
 
 [[package]]
@@ -2035,7 +2035,7 @@ dependencies = [
  "serde",
  "tabular",
  "target-spec",
- "toml 0.5.11",
+ "toml 0.8.2",
  "toml_edit 0.17.1",
  "twox-hash",
 ]
@@ -3495,7 +3495,7 @@ dependencies = [
  "serde_json",
  "target-lexicon",
  "test-case",
- "toml 0.5.11",
+ "toml 0.8.2",
  "unicode-ident",
 ]
 
@@ -3696,6 +3696,19 @@ dependencies = [
  "toml_edit 0.19.14",
 ]
 
+[[package]]
+name = "toml"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "185d8ab0dfbb35cf1399a6344d8484209c088f75f8f68230da55d48d95d43e3d"
+dependencies = [
+ "indexmap 2.0.2",
+ "serde",
+ "serde_spanned",
+ "toml_datetime 0.6.3",
+ "toml_edit 0.20.2",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.5.1"
@@ -3736,6 +3749,19 @@ dependencies = [
  "winnow",
 ]
 
+[[package]]
+name = "toml_edit"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "396e4d48bbb2b7554c944bde63101b5ae446cff6ec4a24227428f15eb72ef338"
+dependencies = [
+ "indexmap 2.0.2",
+ "serde",
+ "serde_spanned",
+ "toml_datetime 0.6.3",
+ "winnow",
+]
+
 [[package]]
 name = "twox-hash"
 version = "1.6.3"
diff --git a/guppy-summaries/Cargo.toml b/guppy-summaries/Cargo.toml
index b29981432cf3..48e7ebde3ead 100644
--- a/guppy-summaries/Cargo.toml
+++ b/guppy-summaries/Cargo.toml
@@ -28,7 +28,7 @@ all-features = true
 camino = { version = "1.1.6", features = ["serde1"] }
 cfg-if = "1.0.0"
 diffus = "0.10.0"
-toml = { version = "0.5.11", features = ["preserve_order"] }
+toml = { version = "0.8.2", features = ["preserve_order"] }
 semver = { version = "1.0.20", features = ["serde"] }
 serde = { version = "1.0.188", features = ["derive"] }
 guppy-workspace-hack.workspace = true
diff --git a/guppy/Cargo.toml b/guppy/Cargo.toml
index 796b71fb35b5..7d1d417cef9b 100644
--- a/guppy/Cargo.toml
+++ b/guppy/Cargo.toml
@@ -50,7 +50,7 @@ serde_json = "1.0.107"
 smallvec = "1.11.1"
 static_assertions = "1.1.0"
 target-spec = { version = "3.0.1", path = "../target-spec" }
-toml = { version = "0.5.11", optional = true, features = ["preserve_order"] }
+toml = { version = "0.8.2", 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 8066497f801f..e5e9506a5ea6 100644
--- a/target-spec/Cargo.toml
+++ b/target-spec/Cargo.toml
@@ -31,7 +31,7 @@ guppy-workspace-hack.workspace = true
 [dev-dependencies]
 rustc_version = "0.4.0"
 test-case = "3.2.1"
-toml = "0.5.11"
+toml = "0.8.2"
 
 [features]
 custom = ["dep:serde", "dep:serde_json"]
diff --git a/tools/determinator/Cargo.toml b/tools/determinator/Cargo.toml
index 1aacd9caa117..cb56bd6da658 100644
--- a/tools/determinator/Cargo.toml
+++ b/tools/determinator/Cargo.toml
@@ -37,7 +37,7 @@ petgraph = { version = "0.6.4", default-features = false, features = [
 ] }
 rayon = "1.8.0"
 serde = { version = "1.0.188", features = ["derive"] }
-toml = "0.5.11"
+toml = "0.8.2"
 guppy-workspace-hack.workspace = true
 
 [dev-dependencies]
diff --git a/tools/hakari/Cargo.toml b/tools/hakari/Cargo.toml
index 73de698ac8da..0a9bca9283d9 100644
--- a/tools/hakari/Cargo.toml
+++ b/tools/hakari/Cargo.toml
@@ -40,7 +40,7 @@ rayon = "1.8.0"
 serde = { version = "1.0.188", features = ["derive"], optional = true }
 tabular = { version = "0.2.0", features = ["ansi-cell"], optional = true }
 target-spec = { version = "3.0.1", path = "../../target-spec" }
-toml = { version = "0.5.11", optional = true }
+toml = { version = "0.8.2", 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 14d842baedd1..3133465e7284 100644
--- a/workspace-hack/Cargo.toml
+++ b/workspace-hack/Cargo.toml
@@ -30,7 +30,7 @@ regex-automata = { version = "0.3.4", default-features = false, features = ["dfa
 semver = { version = "1.0.20", features = ["serde"] }
 serde = { version = "1.0.188", features = ["alloc", "derive"] }
 serde_json = { version = "1.0.107", features = ["unbounded_depth"] }
-toml = { version = "0.5.11", features = ["preserve_order"] }
+toml = { version = "0.8.2", features = ["preserve_order"] }
 
 [build-dependencies]
 proc-macro2 = { version = "1.0.66" }