diff --git a/Cargo.toml b/Cargo.toml
index cae96e23d..83faddb1a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -101,7 +101,7 @@ features = [
 cargo-test-macro = { path = "crates/cargo-test-macro" }
 cargo-test-support = { path = "crates/cargo-test-support" }
 same-file = "1.0.6"
-snapbox = { version = "0.3.0", features = ["diff", "path"] }
+snapbox = { version = "0.4.0", features = ["diff", "path"] }
 
 [build-dependencies]
 flate2 = { version = "1.0.3", default-features = false, features = ["zlib"] }
diff --git a/crates/cargo-test-support/Cargo.toml b/crates/cargo-test-support/Cargo.toml
index 658bdf6df..2ed1286c4 100644
--- a/crates/cargo-test-support/Cargo.toml
+++ b/crates/cargo-test-support/Cargo.toml
@@ -12,7 +12,7 @@ anyhow = "1.0.34"
 cargo-test-macro = { path = "../cargo-test-macro" }
 cargo-util = { path = "../cargo-util" }
 crates-io = { path = "../crates-io" }
-snapbox = { version = "0.3.0", features = ["diff", "path"] }
+snapbox = { version = "0.4.0", features = ["diff", "path"] }
 filetime = "0.2"
 flate2 = { version = "1.0", default-features = false, features = ["zlib"] }
 git2 = "0.15.0"