diff --git a/src/cli/run.rs b/src/cli/run.rs
index 7f87bedcf..37de86e0d 100644
--- a/src/cli/run.rs
+++ b/src/cli/run.rs
@@ -46,9 +46,7 @@ pub async fn execute(args: Args) -> anyhow::Result<()> {
         });
 
     // Determine the current shell
-    let shell: ShellEnum = ShellEnum::from_env()
-        .or_else(ShellEnum::from_parent_process)
-        .unwrap_or_default();
+    let shell: ShellEnum = ShellEnum::default();
 
     // Construct an activator so we can run commands from the environment
     let prefix = get_up_to_date_prefix(&project).await?;
diff --git a/src/command/mod.rs b/src/command/mod.rs
index 19f360ff4..d75b9aab1 100644
--- a/src/command/mod.rs
+++ b/src/command/mod.rs
@@ -19,6 +19,7 @@ pub struct ProcessCmd {
     pub cmd: CmdArgs,
 
     /// A list of commands that should be run before this one
+    #[serde(default)]
     #[serde_as(deserialize_as = "OneOrMany<_, PreferMany>")]
     pub depends_on: Vec<String>,
 }