diff --git a/Cargo.lock b/Cargo.lock
index bec8b440..b462dcab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -929,6 +929,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
+[[package]]
+name = "heck"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
+
 [[package]]
 name = "hermit-abi"
 version = "0.3.1"
@@ -964,9 +970,9 @@ dependencies = [
 
 [[package]]
 name = "indoc"
-version = "1.0.9"
+version = "2.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa799dd5ed20a7e349f3b4639aa80d74549c81716d9ec4f994c9b5815598306"
+checksum = "1e186cfbae8084e513daff4240b4797e342f988cecda4fb6c939150f96315fd8"
 
 [[package]]
 name = "instant"
@@ -1432,9 +1438,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.19.2"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e681a6cfdc4adcc93b4d3cf993749a4552018ee0a9b65fc0ccfad74352c72a38"
+checksum = "e82ad98ce1991c9c70c3464ba4187337b9c45fcbbb060d46dca15f0c075e14e2"
 dependencies = [
  "cfg-if",
  "indoc",
@@ -1449,9 +1455,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.19.2"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "076c73d0bc438f7a4ef6fdd0c3bb4732149136abd952b110ac93e4edb13a6ba5"
+checksum = "5503d0b3aee2c7a8dbb389cd87cd9649f675d4c7f60ca33699a3e3859d81a891"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -1459,9 +1465,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.19.2"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e53cee42e77ebe256066ba8aa77eff722b3bb91f3419177cf4cd0f304d3284d9"
+checksum = "18a79e8d80486a00d11c0dcb27cd2aa17c022cc95c677b461f01797226ba8f41"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -1469,25 +1475,26 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.19.2"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfeb4c99597e136528c6dd7d5e3de5434d1ceaf487436a3f03b2d56b6fc9efd1"
+checksum = "1f4b0dc7eaa578604fab11c8c7ff8934c71249c61d4def8e272c76ed879f03d4"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.32",
 ]
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.19.2"
+version = "0.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "947dc12175c254889edc0c02e399476c2f652b4b9ebd123aa655c224de259536"
+checksum = "816a4f709e29ddab2e3cdfe94600d554c5556cad0ddfeea95c47b580c3247fa4"
 dependencies = [
+ "heck",
  "proc-macro2",
  "quote",
- "syn 1.0.109",
+ "syn 2.0.32",
 ]
 
 [[package]]
@@ -2048,9 +2055,9 @@ checksum = "1dd624098567895118886609431a7c3b8f516e41d30e0643f03d94592a147e36"
 
 [[package]]
 name = "unindent"
-version = "0.1.11"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1766d682d402817b5ac4490b3c3002d91dfa0d22812f341609f97b08757359c"
+checksum = "c7de7d73e1754487cb58364ee906a499937a0dfabd86bcb980fa99ec8c8fa2ce"
 
 [[package]]
 name = "version_check"
diff --git a/common/Cargo.toml b/common/Cargo.toml
index d5ada2f7..7ccb6301 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -15,7 +15,7 @@ features = ["schemars", "serde"]
 
 [dependencies]
 enumn = { version = "0.1.6", optional = true }
-pyo3 = { version = "0.19", optional = true }
+pyo3 = { version = "0.20", optional = true }
 schemars = { version = "0.8.7", optional = true }
 serde = { version = "1.0", features = ["derive"], optional = true }
 
diff --git a/common/src/lib.rs b/common/src/lib.rs
index 2cd49a47..8ef53436 100644
--- a/common/src/lib.rs
+++ b/common/src/lib.rs
@@ -44,7 +44,10 @@ pub use geometry::{Affine, Point, Rect, Size, Vec2};
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum Role {
     Unknown,
@@ -279,7 +282,10 @@ impl Default for Role {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum Action {
     /// Do the default action for an object, typically this means "click".
@@ -442,7 +448,10 @@ impl JsonSchema for Actions {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum Orientation {
     /// E.g. most toolbars and separators.
@@ -456,7 +465,10 @@ pub enum Orientation {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum TextDirection {
     LeftToRight,
@@ -474,7 +486,10 @@ pub enum TextDirection {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum Invalid {
     True,
@@ -487,7 +502,10 @@ pub enum Invalid {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum Checked {
     False,
@@ -506,7 +524,10 @@ pub enum Checked {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum DefaultActionVerb {
     Click,
@@ -530,7 +551,10 @@ pub enum DefaultActionVerb {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum SortDirection {
     Unsorted,
@@ -544,7 +568,10 @@ pub enum SortDirection {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum AriaCurrent {
     False,
@@ -561,7 +588,10 @@ pub enum AriaCurrent {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum AutoComplete {
     Inline,
@@ -574,7 +604,10 @@ pub enum AutoComplete {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum Live {
     Off,
@@ -587,7 +620,10 @@ pub enum Live {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum HasPopup {
     True,
@@ -603,7 +639,10 @@ pub enum HasPopup {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum ListStyle {
     Circle,
@@ -620,7 +659,10 @@ pub enum ListStyle {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum TextAlign {
     Left,
@@ -634,7 +676,10 @@ pub enum TextAlign {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum VerticalOffset {
     Subscript,
@@ -646,7 +691,10 @@ pub enum VerticalOffset {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "schemars", derive(JsonSchema))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
-#[cfg_attr(feature = "pyo3", pyclass(module = "accesskit"))]
+#[cfg_attr(
+    feature = "pyo3",
+    pyclass(module = "accesskit", rename_all = "SCREAMING_SNAKE_CASE")
+)]
 #[repr(u8)]
 pub enum TextDecoration {
     Solid,