diff --git a/Cargo.lock b/Cargo.lock
index 4e46c0525d..44a1ba5de5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -956,7 +956,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.0",
 ]
 
 [[package]]
@@ -1042,7 +1042,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "778e2ac28f6c47af28e4907f13ffd1e1ddbd400980a9abd7c8df189bf578a5ad"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -1168,9 +1168,9 @@ dependencies = [
 
 [[package]]
 name = "get-size-derive2"
-version = "0.6.2"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75a17a226478b2e8294ded60782c03efe54476aa8cd1371d0e5ad9d1071e74e0"
+checksum = "b5a443e77201a230c25f0c11574e9b20e5705f749520e0f30ab0d0974fb1a794"
 dependencies = [
  "attribute-derive",
  "quote",
@@ -1179,13 +1179,13 @@ dependencies = [
 
 [[package]]
 name = "get-size2"
-version = "0.6.2"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5697765925a05c9d401dd04a93dfd662d336cc25fdcc3301220385a1ffcfdde5"
+checksum = "0594e2a78d082f2f8b1615c728391c6a5277f6c017474a7249934fc735945d55"
 dependencies = [
  "compact_str",
  "get-size-derive2",
- "hashbrown 0.15.5",
+ "hashbrown 0.16.0",
  "smallvec",
 ]
 
@@ -1280,6 +1280,15 @@ dependencies = [
  "foldhash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5419bdc4f6a9207fbeba6d11b604d481addf78ecd10c11ad51e76c2f6482748d"
+dependencies = [
+ "equivalent",
+]
+
 [[package]]
 name = "hashlink"
 version = "0.10.0"
@@ -2994,7 +3003,7 @@ dependencies = [
  "fern",
  "glob",
  "globset",
- "hashbrown 0.15.5",
+ "hashbrown 0.16.0",
  "imperative",
  "insta",
  "is-macro",
@@ -3435,7 +3444,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -3830,7 +3839,7 @@ dependencies = [
  "getrandom 0.3.3",
  "once_cell",
  "rustix",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.0",
 ]
 
 [[package]]
@@ -4303,7 +4312,7 @@ dependencies = [
  "drop_bomb",
  "get-size2",
  "glob",
- "hashbrown 0.15.5",
+ "hashbrown 0.16.0",
  "indexmap",
  "insta",
  "itertools 0.14.0",
diff --git a/Cargo.toml b/Cargo.toml
index db549efe17..9d3963b9e6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -86,7 +86,7 @@ etcetera = { version = "0.10.0" }
 fern = { version = "0.7.0" }
 filetime = { version = "0.2.23" }
 getrandom = { version = "0.3.1" }
-get-size2 = { version = "0.6.2", features = [
+get-size2 = { version = "0.6.3", features = [
     "derive",
     "smallvec",
     "hashbrown",
@@ -95,7 +95,7 @@ get-size2 = { version = "0.6.2", features = [
 glob = { version = "0.3.1" }
 globset = { version = "0.4.14" }
 globwalk = { version = "0.9.1" }
-hashbrown = { version = "0.15.0", default-features = false, features = [
+hashbrown = { version = "0.16.0", default-features = false, features = [
     "raw-entry",
     "equivalent",
     "inline-more",
diff --git a/crates/ty_python_semantic/src/types/property_tests/type_generation.rs b/crates/ty_python_semantic/src/types/property_tests/type_generation.rs
index f46a1cb345..52136e4046 100644
--- a/crates/ty_python_semantic/src/types/property_tests/type_generation.rs
+++ b/crates/ty_python_semantic/src/types/property_tests/type_generation.rs
@@ -7,9 +7,9 @@ use crate::types::{
     Parameters, Signature, SpecialFormType, SubclassOfType, Type, UnionType,
 };
 use crate::{Db, module_resolver::KnownModule};
-use hashbrown::HashSet;
 use quickcheck::{Arbitrary, Gen};
 use ruff_python_ast::name::Name;
+use rustc_hash::FxHashSet;
 
 /// A test representation of a type that can be transformed unambiguously into a real Type,
 /// given a db.
@@ -377,7 +377,7 @@ fn arbitrary_type(g: &mut Gen, size: u32, fully_static: bool) -> Ty {
 
 fn arbitrary_parameter_list(g: &mut Gen, size: u32, fully_static: bool) -> Vec<Param> {
     let mut params: Vec<Param> = vec![];
-    let mut used_names = HashSet::new();
+    let mut used_names = FxHashSet::default();
 
     // First, choose the number of parameters to generate.
     for _ in 0..*g.choose(&[0, 1, 2, 3, 4, 5]).unwrap() {