diff --git a/Cargo.lock b/Cargo.lock
index 1d1a2e20a9280..ec81c4e17fa46 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1276,9 +1276,9 @@ dependencies = [
 
 [[package]]
 name = "libmimalloc-sys"
-version = "0.1.34"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25d058a81af0d1c22d7a1c948576bee6d673f7af3c0f35564abd6c81122f513d"
+checksum = "3979b5c37ece694f1f5e51e7ecc871fdb0f517ed04ee45f88d15d6d553cb9664"
 dependencies = [
  "cc",
  "libc",
@@ -1344,9 +1344,9 @@ dependencies = [
 
 [[package]]
 name = "mimalloc"
-version = "0.1.38"
+version = "0.1.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "972e5f23f6716f62665760b0f4cbf592576a80c7b879ba9beaafc0e558894127"
+checksum = "fa01922b5ea280a911e323e4d2fd24b7fe5cc4042e0d2cda3c40775cdc4bdc9c"
 dependencies = [
  "libmimalloc-sys",
 ]
diff --git a/crates/ruff_benchmark/Cargo.toml b/crates/ruff_benchmark/Cargo.toml
index 9f0d30c9737b2..afe80b0602b12 100644
--- a/crates/ruff_benchmark/Cargo.toml
+++ b/crates/ruff_benchmark/Cargo.toml
@@ -50,7 +50,7 @@ ruff_python_parser = { path = "../ruff_python_parser" }
 codspeed = ["codspeed-criterion-compat"]
 
 [target.'cfg(target_os = "windows")'.dev-dependencies]
-mimalloc = "0.1.34"
+mimalloc = "0.1.39"
 
 [target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64")))'.dev-dependencies]
 tikv-jemallocator = "0.5.0"
diff --git a/crates/ruff_cli/Cargo.toml b/crates/ruff_cli/Cargo.toml
index 4b33aa55ddff7..5b95bdf780c83 100644
--- a/crates/ruff_cli/Cargo.toml
+++ b/crates/ruff_cli/Cargo.toml
@@ -79,7 +79,7 @@ test-case = { workspace = true }
 ureq = { version = "2.6.2", features = [] }
 
 [target.'cfg(target_os = "windows")'.dependencies]
-mimalloc = "0.1.34"
+mimalloc = "0.1.39"
 
 [target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64")))'.dependencies]
 tikv-jemallocator = "0.5.0"