diff --git a/Cargo.lock b/Cargo.lock
index 02db07e..eeaf380 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -109,9 +109,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.26.0"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ba0117f4212101ee6544044dae45abe1083d30ce7b29c4b5cbdfa2354e07383"
+checksum = "37a6df7eab65fc7bee654a421404947e10a0f7085b6951bf2ea395f4659fb0cf"
 dependencies = [
  "indoc",
  "libc",
@@ -126,9 +126,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.26.0"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fc6ddaf24947d12a9aa31ac65431fb1b851b8f4365426e182901eabfb87df5f"
+checksum = "f77d387774f6f6eec64a004eac0ed525aab7fa1966d94b42f743797b3e395afb"
 dependencies = [
  "python3-dll-a",
  "target-lexicon",
@@ -136,9 +136,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.26.0"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "025474d3928738efb38ac36d4744a74a400c901c7596199e20e45d98eb194105"
+checksum = "2dd13844a4242793e02df3e2ec093f540d948299a6a77ea9ce7afd8623f542be"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -146,9 +146,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.26.0"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e64eb489f22fe1c95911b77c44cc41e7c19f3082fc81cce90f657cdc42ffded"
+checksum = "eaf8f9f1108270b90d3676b8679586385430e5c0bb78bb5f043f95499c821a71"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -158,9 +158,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.26.0"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "100246c0ecf400b475341b8455a9213344569af29a3c841d29270e53102e0fcf"
+checksum = "70a3b2274450ba5288bc9b8c1b69ff569d1d61189d4bff38f8d22e03d17f932b"
 dependencies = [
  "heck",
  "proc-macro2",
diff --git a/Cargo.toml b/Cargo.toml
index 6eef844..07e1840 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ crate-type = ["cdylib"]
 regress = "0.10.4"
 
 [dependencies.pyo3]
-version = "0.26.0"
+version = "0.27.1"
 # To build extension for PyPy on Windows, "generate-import-lib" is needed:
 # https://github.com/PyO3/maturin-action/issues/267#issuecomment-2106844429
 features = ["extension-module", "generate-import-lib"]