diff --git a/src/tools/miri/Cargo.lock b/src/tools/miri/Cargo.lock
index 363b96fdff1f..076a807c4ef6 100644
--- a/src/tools/miri/Cargo.lock
+++ b/src/tools/miri/Cargo.lock
@@ -1051,9 +1051,9 @@ checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 
 [[package]]
 name = "ui_test"
-version = "0.26.5"
+version = "0.27.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32ee4c40e5a5f9fa6864ff976473e5d6a6e9884b6ce68b40690d9f87e1994c83"
+checksum = "180a1250feba0214b892e22c3a14e9f6688cc084d7b45ec4672106fcb7914641"
 dependencies = [
  "annotate-snippets",
  "anyhow",
diff --git a/src/tools/miri/Cargo.toml b/src/tools/miri/Cargo.toml
index 6e8e270985e0..1d4657b0dfd8 100644
--- a/src/tools/miri/Cargo.toml
+++ b/src/tools/miri/Cargo.toml
@@ -47,8 +47,8 @@ windows-sys = { version = "0.52", features = [
 ] }
 
 [dev-dependencies]
+ui_test = "0.27.1"
 colored = "2"
-ui_test = "0.26.5"
 rustc_version = "0.4"
 regex = "1.5.5"
 tempfile = "3"
diff --git a/src/tools/miri/tests/ui.rs b/src/tools/miri/tests/ui.rs
index 9b9542b88a96..a3760d306f87 100644
--- a/src/tools/miri/tests/ui.rs
+++ b/src/tools/miri/tests/ui.rs
@@ -13,7 +13,7 @@ use ui_test::custom_flags::edition::Edition;
 use ui_test::dependencies::DependencyBuilder;
 use ui_test::per_test_config::TestConfig;
 use ui_test::spanned::Spanned;
-use ui_test::{CommandBuilder, Config, Format, Match, OutputConflictHandling, status_emitter};
+use ui_test::{CommandBuilder, Config, Format, Match, ignore_output_conflict, status_emitter};
 
 #[derive(Copy, Clone, Debug)]
 enum Mode {
@@ -82,9 +82,18 @@ fn build_native_lib() -> PathBuf {
     native_lib_path
 }
 
+struct WithDependencies {
+    bless: bool,
+}
+
 /// Does *not* set any args or env vars, since it is shared between the test runner and
 /// run_dep_mode.
-fn miri_config(target: &str, path: &str, mode: Mode, with_dependencies: bool) -> Config {
+fn miri_config(
+    target: &str,
+    path: &str,
+    mode: Mode,
+    with_dependencies: Option<WithDependencies>,
+) -> Config {
     // Miri is rustc-like, so we create a default builder for rustc and modify it
     let mut program = CommandBuilder::rustc();
     program.program = miri_path();
@@ -119,7 +128,7 @@ fn miri_config(target: &str, path: &str, mode: Mode, with_dependencies: bool) ->
     // keep in sync with `./miri run`
     config.comment_defaults.base().add_custom("edition", Edition("2021".into()));
 
-    if with_dependencies {
+    if let Some(WithDependencies { bless }) = with_dependencies {
         config.comment_defaults.base().set_custom("dependencies", DependencyBuilder {
             program: CommandBuilder {
                 // Set the `cargo-miri` binary, which we expect to be in the same folder as the `miri` binary.
@@ -134,6 +143,7 @@ fn miri_config(target: &str, path: &str, mode: Mode, with_dependencies: bool) ->
             },
             crate_manifest_path: Path::new("test_dependencies").join("Cargo.toml"),
             build_std: None,
+            bless_lockfile: bless,
         });
     }
     config
@@ -146,7 +156,20 @@ fn run_tests(
     with_dependencies: bool,
     tmpdir: &Path,
 ) -> Result<()> {
+    // Handle command-line arguments.
+    let mut args = ui_test::Args::test()?;
+    args.bless |= env::var_os("RUSTC_BLESS").is_some_and(|v| v != "0");
+
+    let with_dependencies = with_dependencies.then_some(WithDependencies { bless: args.bless });
+
     let mut config = miri_config(target, path, mode, with_dependencies);
+    config.with_args(&args);
+    config.bless_command = Some("./miri test --bless".into());
+
+    if env::var_os("MIRI_SKIP_UI_CHECKS").is_some() {
+        assert!(!args.bless, "cannot use RUSTC_BLESS and MIRI_SKIP_UI_CHECKS at the same time");
+        config.output_conflict_handling = ignore_output_conflict;
+    }
 
     // Add a test env var to do environment communication tests.
     config.program.envs.push(("MIRI_ENV_VAR_TEST".into(), Some("0".into())));
@@ -182,16 +205,6 @@ fn run_tests(
         config.program.args.push(flag);
     }
 
-    // Handle command-line arguments.
-    let mut args = ui_test::Args::test()?;
-    args.bless |= env::var_os("RUSTC_BLESS").is_some_and(|v| v != "0");
-    config.with_args(&args);
-    config.bless_command = Some("./miri test --bless".into());
-
-    if env::var_os("MIRI_SKIP_UI_CHECKS").is_some() {
-        assert!(!args.bless, "cannot use RUSTC_BLESS and MIRI_SKIP_UI_CHECKS at the same time");
-        config.output_conflict_handling = OutputConflictHandling::Ignore;
-    }
     eprintln!("   Compiler: {}", config.program.display());
     ui_test::run_tests_generic(
         // Only run one test suite. In the future we can add all test suites to one `Vec` and run
@@ -327,7 +340,8 @@ fn main() -> Result<()> {
 }
 
 fn run_dep_mode(target: String, args: impl Iterator<Item = OsString>) -> Result<()> {
-    let mut config = miri_config(&target, "", Mode::RunDep, /* with dependencies */ true);
+    let mut config =
+        miri_config(&target, "", Mode::RunDep, Some(WithDependencies { bless: false }));
     config.comment_defaults.base().custom.remove("edition"); // `./miri` adds an `--edition` in `args`, so don't set it twice
     config.fill_host_and_target()?;
     config.program.args = args.collect();