diff --git a/test-crates/pyo3-mixed-py-subdir/Cargo.lock b/test-crates/pyo3-mixed-py-subdir/Cargo.lock
index ee6f69a34..56ca2d6d4 100644
--- a/test-crates/pyo3-mixed-py-subdir/Cargo.lock
+++ b/test-crates/pyo3-mixed-py-subdir/Cargo.lock
@@ -92,8 +92,7 @@ dependencies = [
 [[package]]
 name = "pyo3"
 version = "0.17.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "201b6887e5576bf2f945fe65172c1fcbf3fcf285b23e4d71eb171d9736e38d32"
+source = "git+https://github.com/PyO3/pyo3.git?branch=main#24dabc5c08279d90673c1642b2b63f91c8a03693"
 dependencies = [
  "cfg-if",
  "indoc",
@@ -109,8 +108,7 @@ dependencies = [
 [[package]]
 name = "pyo3-build-config"
 version = "0.17.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf0708c9ed01692635cbf056e286008e5a2927ab1a5e48cdd3aeb1ba5a6fef47"
+source = "git+https://github.com/PyO3/pyo3.git?branch=main#24dabc5c08279d90673c1642b2b63f91c8a03693"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -119,8 +117,7 @@ dependencies = [
 [[package]]
 name = "pyo3-ffi"
 version = "0.17.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90352dea4f486932b72ddf776264d293f85b79a1d214de1d023927b41461132d"
+source = "git+https://github.com/PyO3/pyo3.git?branch=main#24dabc5c08279d90673c1642b2b63f91c8a03693"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -129,8 +126,7 @@ dependencies = [
 [[package]]
 name = "pyo3-macros"
 version = "0.17.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7eb24b804a2d9e88bfcc480a5a6dd76f006c1e3edaf064e8250423336e2cd79d"
+source = "git+https://github.com/PyO3/pyo3.git?branch=main#24dabc5c08279d90673c1642b2b63f91c8a03693"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -141,8 +137,7 @@ dependencies = [
 [[package]]
 name = "pyo3-macros-backend"
 version = "0.17.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f22bb49f6a7348c253d7ac67a6875f2dc65f36c2ae64a82c381d528972bea6d6"
+source = "git+https://github.com/PyO3/pyo3.git?branch=main#24dabc5c08279d90673c1642b2b63f91c8a03693"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/test-crates/pyo3-mixed-py-subdir/Cargo.toml b/test-crates/pyo3-mixed-py-subdir/Cargo.toml
index 239d1d233..26a8b8abd 100644
--- a/test-crates/pyo3-mixed-py-subdir/Cargo.toml
+++ b/test-crates/pyo3-mixed-py-subdir/Cargo.toml
@@ -16,3 +16,7 @@ crate-type = ["cdylib"]
 [package.metadata.maturin]
 python-source = "python"
 name = "pyo3_mixed_py_subdir._pyo3_mixed"
+
+[patch.crates-io]
+pyo3-ffi = { git = "https://github.com/PyO3/pyo3.git", branch = "main" }
+pyo3 = { git = "https://github.com/PyO3/pyo3.git", branch = "main" }