diff --git a/Cargo.lock b/Cargo.lock
index 8d37ee1..59ce125 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -104,9 +104,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.25.1"
+version = "0.27.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8970a78afe0628a3e3430376fc5fd76b6b45c4d43360ffd6cdd40bdde72b682a"
+checksum = "ab53c047fcd1a1d2a8820fe84f05d6be69e9526be40cb03b73f86b6b03e6d87d"
 dependencies = [
  "indoc",
  "libc",
@@ -121,19 +121,18 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.25.1"
+version = "0.27.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "458eb0c55e7ece017adeba38f2248ff3ac615e53660d7c71a238d7d2a01c7598"
+checksum = "b455933107de8642b4487ed26d912c2d899dec6114884214a0b3bb3be9261ea6"
 dependencies = [
- "once_cell",
  "target-lexicon",
 ]
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.25.1"
+version = "0.27.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7114fe5457c61b276ab77c5055f206295b812608083644a5c5b2640c3102565c"
+checksum = "1c85c9cbfaddf651b1221594209aed57e9e5cff63c4d11d1feead529b872a089"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -141,9 +140,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.25.1"
+version = "0.27.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8725c0a622b374d6cb051d11a0983786448f7785336139c3c94f5aa6bef7e50"
+checksum = "0a5b10c9bf9888125d917fb4d2ca2d25c8df94c7ab5a52e13313a07e050a3b02"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -153,9 +152,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.25.1"
+version = "0.27.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4109984c22491085343c05b0dbc54ddc405c3cf7b4374fc533f5c3313a572ccc"
+checksum = "03b51720d314836e53327f5871d4c0cfb4fb37cc2c4a11cc71907a86342c40f9"
 dependencies = [
  "heck",
  "proc-macro2",
diff --git a/Cargo.toml b/Cargo.toml
index 49db4c8..03827bb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,12 +20,12 @@ tracing-log = ["tracing-subscriber/tracing-log"]
 arc-swap = "~1"
 # It's OK to ask for std on log, because pyo3 needs it too.
 log = { version = "~0.4.4", default-features = false, features = ["std"] }
-pyo3 = { version = ">=0.23, <0.26", default-features = false }
+pyo3 = { version = ">=0.23, <0.28", default-features = false }
 tracing = "0.1.41"
 tracing-subscriber = { version = "0.3.19", default-features = false, features = [ "std", "fmt", "ansi" ] }
 
 [dev-dependencies]
-pyo3 = { version = ">=0.23, <0.26", default-features = false, features = ["auto-initialize", "macros"] }
+pyo3 = { version = ">=0.23, <0.28", default-features = false, features = ["auto-initialize", "macros"] }
 
 # `pyo3-macros` is lying about the minimal version for its `syn` dependency.
 # Because we're testing with `-Zminimal-versions`, we need to explicitly set it here.