diff --git a/eden/fs/Cargo.toml b/eden/fs/Cargo.toml
index 71625779d95a2..cfd8838357d9e 100644
--- a/eden/fs/Cargo.toml
+++ b/eden/fs/Cargo.toml
@@ -3,8 +3,8 @@ abomonation = { git = "https://github.com/markbt/abomonation", rev = "0f43346d2a
 base64urlsafedata = { git = "https://github.com/kanidm/webauthn-rs.git", rev = "d278c56adfa39a0723c79bdcd461644194bc5138" }
 bindgen = { git = "https://github.com/rust-lang/rust-bindgen", rev = "7ea3f36d58399204a6ab81a38be14c3c363c296b" }
 bindgen-cli = { git = "https://github.com/rust-lang/rust-bindgen", rev = "7ea3f36d58399204a6ab81a38be14c3c363c296b" }
-cxx = { package = "cxx", git = "https://github.com/facebookexperimental/cxx.git", rev = "cf9ae5500db7d31292d12a6b0728b0f6a1d7b9c9" }
-cxx-build = { package = "cxx-build", git = "https://github.com/facebookexperimental/cxx.git", rev = "cf9ae5500db7d31292d12a6b0728b0f6a1d7b9c9" }
+cxx = { package = "cxx", git = "https://github.com/facebookexperimental/cxx.git", rev = "2ea39c564284a70fdc1793fd72c442433e5a2638" }
+cxx-build = { package = "cxx-build", git = "https://github.com/facebookexperimental/cxx.git", rev = "2ea39c564284a70fdc1793fd72c442433e5a2638" }
 displaydoc = { git = "https://github.com/yaahc/displaydoc", rev = "7dc6e324b1788a6b7fb9f3a1953c512923a3e9f0" }
 graphql-parser = { git = "https://github.com/graphql-rust//graphql-parser", rev = "8d76425d83c40670570cc325f57c730262f07456" }
 lru-disk-cache = { git = "https://github.com/mozilla/sccache", rev = "fdbf843d174c6796d736b2b61dab0297670390f8" }
diff --git a/eden/mononoke/Cargo.toml b/eden/mononoke/Cargo.toml
index 6bb469d5d849f..87d531dd6b209 100644
--- a/eden/mononoke/Cargo.toml
+++ b/eden/mononoke/Cargo.toml
@@ -96,8 +96,8 @@ abomonation = { git = "https://github.com/markbt/abomonation", rev = "0f43346d2a
 base64urlsafedata = { git = "https://github.com/kanidm/webauthn-rs.git", rev = "d278c56adfa39a0723c79bdcd461644194bc5138" }
 bindgen = { git = "https://github.com/rust-lang/rust-bindgen", rev = "7ea3f36d58399204a6ab81a38be14c3c363c296b" }
 bindgen-cli = { git = "https://github.com/rust-lang/rust-bindgen", rev = "7ea3f36d58399204a6ab81a38be14c3c363c296b" }
-cxx = { package = "cxx", git = "https://github.com/facebookexperimental/cxx.git", rev = "cf9ae5500db7d31292d12a6b0728b0f6a1d7b9c9" }
-cxx-build = { package = "cxx-build", git = "https://github.com/facebookexperimental/cxx.git", rev = "cf9ae5500db7d31292d12a6b0728b0f6a1d7b9c9" }
+cxx = { package = "cxx", git = "https://github.com/facebookexperimental/cxx.git", rev = "2ea39c564284a70fdc1793fd72c442433e5a2638" }
+cxx-build = { package = "cxx-build", git = "https://github.com/facebookexperimental/cxx.git", rev = "2ea39c564284a70fdc1793fd72c442433e5a2638" }
 displaydoc = { git = "https://github.com/yaahc/displaydoc", rev = "7dc6e324b1788a6b7fb9f3a1953c512923a3e9f0" }
 graphql-parser = { git = "https://github.com/graphql-rust//graphql-parser", rev = "8d76425d83c40670570cc325f57c730262f07456" }
 lru-disk-cache = { git = "https://github.com/mozilla/sccache", rev = "fdbf843d174c6796d736b2b61dab0297670390f8" }