diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 61e81a8e6..8ff92f4d1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -121,7 +121,6 @@ jobs:
       - name: run c-api tests
         working-directory: crates/capi
         run: cargo test
-        if: runner.os != 'Windows'  # Requires pyo3 0.29+ on Windows
 
       - run: cargo doc --locked
         if: runner.os == 'Linux'
diff --git a/Cargo.lock b/Cargo.lock
index 508dc6914..fb4c24a60 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2682,8 +2682,7 @@ dependencies = [
 [[package]]
 name = "pyo3"
 version = "0.28.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91fd8e38a3b50ed1167fb981cd6fd60147e091784c427b8f7183a7ee32c31c12"
+source = "git+https://github.com/PyO3/pyo3#901b032bfb8ec8eb05b39be3b98ef880427cf15a"
 dependencies = [
  "libc",
  "once_cell",
@@ -2696,8 +2695,7 @@ dependencies = [
 [[package]]
 name = "pyo3-build-config"
 version = "0.28.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e368e7ddfdeb98c9bca7f8383be1648fd84ab466bf2bc015e94008db6d35611e"
+source = "git+https://github.com/PyO3/pyo3#901b032bfb8ec8eb05b39be3b98ef880427cf15a"
 dependencies = [
  "target-lexicon",
 ]
@@ -2705,8 +2703,7 @@ dependencies = [
 [[package]]
 name = "pyo3-ffi"
 version = "0.28.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f29e10af80b1f7ccaf7f69eace800a03ecd13e883acfacc1e5d0988605f651e"
+source = "git+https://github.com/PyO3/pyo3#901b032bfb8ec8eb05b39be3b98ef880427cf15a"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -2715,8 +2712,7 @@ dependencies = [
 [[package]]
 name = "pyo3-macros"
 version = "0.28.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df6e520eff47c45997d2fc7dd8214b25dd1310918bbb2642156ef66a67f29813"
+source = "git+https://github.com/PyO3/pyo3#901b032bfb8ec8eb05b39be3b98ef880427cf15a"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -2727,12 +2723,10 @@ dependencies = [
 [[package]]
 name = "pyo3-macros-backend"
 version = "0.28.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4cdc218d835738f81c2338f822078af45b4afdf8b2e33cbb5916f108b813acb"
+source = "git+https://github.com/PyO3/pyo3#901b032bfb8ec8eb05b39be3b98ef880427cf15a"
 dependencies = [
  "heck",
  "proc-macro2",
- "pyo3-build-config",
  "quote",
  "syn",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index d926b5f5e..40c7efacb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -103,6 +103,7 @@ lto = "thin"
 
 [patch.crates-io]
 parking_lot_core = { git = "https://github.com/youknowone/parking_lot", branch = "rustpython" }
+pyo3-ffi = { git = "https://github.com/PyO3/pyo3" }
 # REDOX START, Uncomment when you want to compile/check with redoxer
 # REDOX END
 
@@ -256,7 +257,7 @@ pkcs8 = "0.10"
 proc-macro2 = "1.0.105"
 psm = "0.1"
 pymath = { version = "0.2.0", features = ["mul_add", "malachite-bigint", "complex"] }
-pyo3 = "0.28"
+pyo3 = { git = "https://github.com/PyO3/pyo3" }
 quote = "1.0.45"
 radium = "1.1.1"
 rand = "0.9"