diff --git a/Cargo.lock b/Cargo.lock
index 03af941a5..480207932 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1540,15 +1540,6 @@ dependencies = [
  "serde_core",
 ]
 
-[[package]]
-name = "indoc"
-version = "2.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79cf5c93f93228cf8efb3ba362535fb11199ac548a09ce117c9b1adc3030d706"
-dependencies = [
- "rustversion",
-]
-
 [[package]]
 name = "inout"
 version = "0.1.4"
@@ -2590,35 +2581,32 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.27.2"
+version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab53c047fcd1a1d2a8820fe84f05d6be69e9526be40cb03b73f86b6b03e6d87d"
+checksum = "fcf3ccafdf54c050be48a3a086d372f77ba6615f5057211607cd30e5ac5cec6d"
 dependencies = [
- "indoc",
  "libc",
- "memoffset",
  "once_cell",
  "portable-atomic",
  "pyo3-build-config",
  "pyo3-ffi",
  "pyo3-macros",
- "unindent",
 ]
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.27.2"
+version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b455933107de8642b4487ed26d912c2d899dec6114884214a0b3bb3be9261ea6"
+checksum = "972720a441c91fd9c49f212a1d2d74c6e3803b231ebc8d66c51efbd7ccab11c8"
 dependencies = [
  "target-lexicon",
 ]
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.27.2"
+version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1c85c9cbfaddf651b1221594209aed57e9e5cff63c4d11d1feead529b872a089"
+checksum = "5994456d9dab8934d600d3867571b6410f24fbd6002570ad56356733eb54859b"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -2626,9 +2614,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.27.2"
+version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a5b10c9bf9888125d917fb4d2ca2d25c8df94c7ab5a52e13313a07e050a3b02"
+checksum = "11ce9cc8d81b3c4969748807604d92b4eef363c5bb82b1a1bdb34ec6f1093a18"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -2638,9 +2626,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.27.2"
+version = "0.28.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03b51720d314836e53327f5871d4c0cfb4fb37cc2c4a11cc71907a86342c40f9"
+checksum = "eaf4b60036a154d23282679b658e3cc7d88d3b8c9a40b43824785f232d2e1b98"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -4303,12 +4291,6 @@ dependencies = [
  "rand 0.8.5",
 ]
 
-[[package]]
-name = "unindent"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7264e107f553ccae879d21fbea1d6724ac785e8c3bfc762137959b5802826ef3"
-
 [[package]]
 name = "untrusted"
 version = "0.7.1"
diff --git a/Cargo.toml b/Cargo.toml
index 35e03a93d..52676360f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -53,7 +53,7 @@ rustyline = { workspace = true }
 
 [dev-dependencies]
 criterion = { workspace = true }
-pyo3 = { version = "0.27", features = ["auto-initialize"] }
+pyo3 = { version = "0.28", features = ["auto-initialize"] }
 rustpython-stdlib = { workspace = true }
 
 [[bench]]