diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index b80b8f5..f691d63 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.81"
+channel = "1.85"
 components = ["rustfmt", "rust-src", "clippy"]
 profile = "minimal"
diff --git a/src/citrea_config/batch_prover.rs b/src/citrea_config/batch_prover.rs
index c72a86c..217dbb4 100644
--- a/src/citrea_config/batch_prover.rs
+++ b/src/citrea_config/batch_prover.rs
@@ -1,33 +1,17 @@
 use serde::{Deserialize, Serialize};
 
 /// The possible configurations of the prover.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
-#[serde(rename_all = "lowercase")]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
 pub enum ProverGuestRunConfig {
     /// Skip proving.
     Skip,
-    /// Run the rollup verification logic inside the current process.
-    Simulate,
     /// Run the rollup verifier in a zkVM executor.
     Execute,
     /// Run the rollup verifier and create a SNARK of execution.
     Prove,
-}
-
-impl<'de> Deserialize<'de> for ProverGuestRunConfig {
-    fn deserialize<D>(deserializer: D) -> Result<ProverGuestRunConfig, D::Error>
-    where
-        D: serde::Deserializer<'de>,
-    {
-        let s = String::deserialize(deserializer)?;
-        match s.as_str() {
-            "skip" => Ok(ProverGuestRunConfig::Skip),
-            "simulate" => Ok(ProverGuestRunConfig::Simulate),
-            "execute" => Ok(ProverGuestRunConfig::Execute),
-            "prove" => Ok(ProverGuestRunConfig::Prove),
-            _ => Err(serde::de::Error::custom("invalid prover guest run config")),
-        }
-    }
+    /// Run the rollup verifier and create a SNARK or a fake proof of execution.
+    ProveWithFakes,
 }
 
 /// Prover configuration
diff --git a/src/citrea_config/rollup.rs b/src/citrea_config/rollup.rs
index 6a3c2f0..e030705 100644
--- a/src/citrea_config/rollup.rs
+++ b/src/citrea_config/rollup.rs
@@ -149,7 +149,7 @@ impl Default for RollupConfig {
             storage: StorageConfig {
                 path: TempDir::new()
                     .expect("Failed to create temporary directory")
-                    .into_path(),
+                    .keep(),
                 db_max_open_files: None,
             },
             runner: None,
@@ -161,9 +161,10 @@ impl Default for RollupConfig {
                 da_private_key: None,
                 tx_backup_dir: TempDir::new()
                     .expect("Failed to create temporary directory")
-                    .into_path()
+                    .keep()
                     .display()
                     .to_string(),
+
                 monitoring: Some(MonitoringConfig::default()),
             },
             public_keys: RollupPublicKeys {
diff --git a/src/config/bitcoin.rs b/src/config/bitcoin.rs
index ba70f0f..a627240 100644
--- a/src/config/bitcoin.rs
+++ b/src/config/bitcoin.rs
@@ -29,7 +29,7 @@ impl Default for BitcoinConfig {
             rpc_password: "password".to_string(),
             data_dir: TempDir::new()
                 .expect("Failed to create temporary directory")
-                .into_path(),
+                .keep(),
             extra_args: Vec::new(),
             network: Network::Regtest,
             docker_image: None,
diff --git a/src/config/test_case.rs b/src/config/test_case.rs
index 61a927c..f91fb17 100644
--- a/src/config/test_case.rs
+++ b/src/config/test_case.rs
@@ -81,7 +81,7 @@ impl Default for TestCaseConfig {
                     |_| {
                         TempDir::new()
                             .expect("Failed to create temporary directory")
-                            .into_path()
+                            .keep()
                     },
                     PathBuf::from,
                 )