diff --git a/Cargo.lock b/Cargo.lock
index 3d22026..d350360 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -117,9 +117,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.21.0"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a02a88a17e74cadbc8ce77855e1d6c8ad0ab82901a4a9b5046bd01c1c0bd95cd"
+checksum = "a5e00b96a521718e08e03b1a622f01c8a8deb50719335de3f60b3b3950f069d8"
 dependencies = [
  "cfg-if",
  "indoc",
@@ -135,9 +135,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.21.0"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a5eb0b6ecba38961f6f4bd6cd5906dfab3cd426ff37b2eed5771006aa31656f1"
+checksum = "7883df5835fafdad87c0d888b266c8ec0f4c9ca48a5bed6bbb592e8dedee1b50"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -145,9 +145,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.21.0"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba8a6e48a29b5d22e4fdaf132d8ba8d3203ee9f06362d48f244346902a594ec3"
+checksum = "01be5843dc60b916ab4dad1dca6d20b9b4e6ddc8e15f50c47fe6d85f1fb97403"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -155,9 +155,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.21.0"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e80493c5965f94a747d0782a607b2328a4eea5391327b152b00e2f3b001cede"
+checksum = "77b34069fc0682e11b31dbd10321cbf94808394c56fd996796ce45217dfac53c"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -167,9 +167,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.21.0"
+version = "0.21.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcd7d86f42004025200e12a6a8119bd878329e6fddef8178eaafa4e4b5906c5b"
+checksum = "08260721f32db5e1a5beae69a55553f56b99bd0e1c3e6e0a5e8851a9d0f5a85c"
 dependencies = [
  "heck",
  "proc-macro2",
diff --git a/Cargo.toml b/Cargo.toml
index 5854949..790253d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,5 +9,5 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = "0.21.0"
+pyo3 = "0.21.2"
 utf16string = "0.2.0"