diff --git a/example/counter/pubspec.lock b/example/counter/pubspec.lock
index fc2aef9d..ac5bb34c 100644
--- a/example/counter/pubspec.lock
+++ b/example/counter/pubspec.lock
@@ -21,10 +21,10 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      sha256: e6a326c8af69605aec75ed6c187d06b349707a27fbff8222ca9cc2cff167975c
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.0"
+    version: "1.2.1"
   clock:
     dependency: transitive
     description:
@@ -37,10 +37,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: "4a07be6cb69c84d677a6c3096fcf960cc3285a8330b4603e0d463d15d9bd934c"
+      sha256: cfc915e6923fe5ce6e153b0723c753045de46de1b4d63771530504004a45fae0
       url: "https://pub.dev"
     source: hosted
-    version: "1.17.1"
+    version: "1.17.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -94,10 +94,10 @@ packages:
     dependency: transitive
     description:
       name: js
-      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
+      sha256: "5528c2f391ededb7775ec1daa69e65a2d61276f7552de2b5f7b8d34ee9fd4ab7"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.7"
+    version: "0.6.5"
   lints:
     dependency: transitive
     description:
@@ -110,10 +110,10 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: c94db23593b89766cda57aab9ac311e3616cf87c6fa4e9749df032f66f30dcb8
+      sha256: "16db949ceee371e9b99d22f88fa3a73c4e59fd0afed0bd25fc336eb76c198b72"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.14"
+    version: "0.12.13"
   material_color_utilities:
     dependency: transitive
     description:
@@ -126,18 +126,18 @@ packages:
     dependency: transitive
     description:
       name: meta
-      sha256: "12307e7f0605ce3da64cf0db90e5fcab0869f3ca03f76be6bb2991ce0a55e82b"
+      sha256: "6c268b42ed578a53088d834796959e4a1814b5e9e164f147f580a386e5decf42"
       url: "https://pub.dev"
     source: hosted
-    version: "1.9.0"
+    version: "1.8.0"
   path:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      sha256: db9d4f58c908a4ba5953fcee2ae317c94889433e5024c27ce74a37f94267945b
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.3"
+    version: "1.8.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -187,10 +187,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "6182294da5abf431177fccc1ee02401f6df30f766bc6130a0852c6b6d7ee6b2d"
+      sha256: ad540f65f92caa91bf21dfc8ffb8c589d6e4dc0c2267818b4cc2792857706206
       url: "https://pub.dev"
     source: hosted
-    version: "0.4.18"
+    version: "0.4.16"
   vector_math:
     dependency: transitive
     description:
@@ -200,4 +200,4 @@ packages:
     source: hosted
     version: "2.1.4"
 sdks:
-  dart: ">=2.19.0 <4.0.0"
+  dart: ">=2.19.0 <3.0.0"
diff --git a/updater/dart_bindings/pubspec.yaml b/updater/dart_bindings/pubspec.yaml
index b458c493..9d59b22f 100644
--- a/updater/dart_bindings/pubspec.yaml
+++ b/updater/dart_bindings/pubspec.yaml
@@ -8,7 +8,8 @@ environment:
 # Add regular dependencies here.
 dependencies:
   ffi: ^2.0.1
-  path: ^1.8.3
+  # path version must match that depended on by Flutter SDK.
+  path: ^1.8.2
 
 dev_dependencies:
   lints: ^2.0.0
diff --git a/updater/library/Cargo.toml b/updater/library/Cargo.toml
index e8c4e8c1..ce1716a1 100644
--- a/updater/library/Cargo.toml
+++ b/updater/library/Cargo.toml
@@ -26,6 +26,7 @@ log = "0.4.14"
 once_cell = "1.17.1"
 serde_yaml = "0.9.19"
 uuid = { version = "1.3.0", features = ["v4", "fast-rng", "macro-diagnostics", "serde"]}
+sha2 = "0.10.6"
 
 [target.'cfg(target_os = "android")'.dependencies]
 android_logger = "0.13.0"
@@ -33,4 +34,4 @@ log-panics = { version = "2", features = ["with-backtrace"]}
 
 
 [dev-dependencies]
-tempdir = "0.3.7"
\ No newline at end of file
+tempdir = "0.3.7"
diff --git a/updater/library/include/updater.h b/updater/library/include/updater.h
index fc4d0e34..c6530456 100644
--- a/updater/library/include/updater.h
+++ b/updater/library/include/updater.h
@@ -84,6 +84,8 @@ SHOREBIRD_EXPORT bool shorebird_check_for_update(void);
  */
 SHOREBIRD_EXPORT void shorebird_update(void);
 
+SHOREBIRD_EXPORT void shorebird_report_failed_launch(void);
+
 #ifdef __cplusplus
 } // extern "C"
 #endif // __cplusplus
diff --git a/updater/library/src/c_api.rs b/updater/library/src/c_api.rs
index 615383e0..b4ce786a 100644
--- a/updater/library/src/c_api.rs
+++ b/updater/library/src/c_api.rs
@@ -117,3 +117,17 @@ pub extern "C" fn shorebird_check_for_update() -> bool {
 pub extern "C" fn shorebird_update() {
     updater::update();
 }
+
+/// Report that the app failed to launch.  This will cause the updater to
+/// attempt to roll back to the previous version if this version has not
+/// been launched successfully before.
+#[no_mangle]
+pub extern "C" fn shorebird_report_failed_launch() {
+    let result = updater::report_failed_launch();
+    match result {
+        Ok(_) => {}
+        Err(e) => {
+            error!("Error recording launch failure: {:?}", e);
+        }
+    }
+}
diff --git a/updater/library/src/cache.rs b/updater/library/src/cache.rs
index 6bd9831a..917c7869 100644
--- a/updater/library/src/cache.rs
+++ b/updater/library/src/cache.rs
@@ -1,7 +1,7 @@
 // This file deals with the cache / state management for the updater.
 
 use std::fs::File;
-use std::io::{BufReader, BufWriter};
+use std::io::{BufReader, BufWriter, Write};
 use std::path::{Path, PathBuf};
 
 use anyhow::Ok;
@@ -15,7 +15,7 @@ pub struct PatchInfo {
     pub number: usize,
 }
 
-#[derive(Deserialize, Serialize, Default, Clone)]
+#[derive(Deserialize, Serialize, Default, Clone, Debug)]
 struct Slot {
     /// Path to the slot directory.
     path: String,
@@ -62,6 +62,17 @@ impl UpdaterState {
     }
 }
 
+// fn compute_hash(path: &Path) -> anyhow::Result<String> {
+//     use sha2::{Digest, Sha256};
+//     use std::{fs, io};
+
+//     let mut file = fs::File::open(&path)?;
+//     let mut hasher = Sha256::new();
+//     let n = io::copy(&mut file, &mut hasher)?;
+//     let hash = hasher.finalize();
+//     Ok(format!("{:x}", hash))
+// }
+
 impl UpdaterState {
     pub fn is_known_good_patch(&self, patch: &PatchInfo) -> bool {
         self.successful_patches.iter().any(|v| v == &patch.number)
@@ -80,6 +91,7 @@ impl UpdaterState {
         if self.is_known_bad_patch(patch) {
             return;
         }
+        info!("Marking patch {} as bad", patch.number);
         self.failed_patches.push(patch.number.clone());
     }
 
@@ -95,7 +107,7 @@ impl UpdaterState {
         self.successful_patches.push(patch.number.clone());
     }
 
-    pub fn load(cache_dir: &str) -> anyhow::Result<Self> {
+    fn load(cache_dir: &str) -> anyhow::Result<Self> {
         // Load UpdaterState from disk
         let path = Path::new(cache_dir).join("state.json");
         let file = File::open(path)?;
@@ -150,6 +162,13 @@ impl UpdaterState {
             return true;
         }
         // TODO: This should also check if the hash matches?
+        // let hash = compute_hash(&PathBuf::from(&slot.path));
+        // if let Ok(hash) = hash {
+        //     if hash == slot.hash {
+        //         return true;
+        //     }
+        //     error!("Hash mismatch for slot: {:?}", slot);
+        // }
         false
     }