diff --git a/crates/dtmm/src/main.rs b/crates/dtmm/src/main.rs
index abdce49..fdce5ab 100644
--- a/crates/dtmm/src/main.rs
+++ b/crates/dtmm/src/main.rs
@@ -37,6 +37,12 @@ fn main() -> Result<()> {
     tracing::trace!(default_config_path = %default_config_path.display());
 
     let matches = command!()
+        .arg(Arg::new("oodle").long("oodle").help(
+            "The oodle library to load. This may either be:\n\
+                        - A library name that will be searched for in the system's default paths.\n\
+                        - A file path relative to the current working directory.\n\
+                        - An absolute file path.",
+        ))
         .arg(
             Arg::new("config")
                 .long("config")
diff --git a/crates/dtmt/src/cmd/build.rs b/crates/dtmt/src/cmd/build.rs
index c72a115..f0f6b41 100644
--- a/crates/dtmt/src/cmd/build.rs
+++ b/crates/dtmt/src/cmd/build.rs
@@ -32,6 +32,12 @@ pub(crate) fn command_definition() -> Command {
                         If omitted, dtmt will search from the current working directory upward.",
                 ),
         )
+        .arg(Arg::new("oodle").long("oodle").help(
+            "The oodle library to load. This may either be:\n\
+                - A library name that will be searched for in the system's default paths.\n\
+                - A file path relative to the current working directory.\n\
+                - An absolute file path.",
+        ))
         .arg(
             Arg::new("out")
                 .long("out")
diff --git a/crates/dtmt/src/cmd/bundle/mod.rs b/crates/dtmt/src/cmd/bundle/mod.rs
index 2a18a02..03ab3f5 100644
--- a/crates/dtmt/src/cmd/bundle/mod.rs
+++ b/crates/dtmt/src/cmd/bundle/mod.rs
@@ -1,4 +1,4 @@
-use clap::{ArgMatches, Command};
+use clap::{Arg, ArgMatches, Command};
 use color_eyre::eyre::Result;
 
 mod decompress;
@@ -10,6 +10,12 @@ pub(crate) fn command_definition() -> Command {
     Command::new("bundle")
         .subcommand_required(true)
         .about("Manipulate the game's bundle files")
+        .arg(Arg::new("oodle").long("oodle").help(
+            "The oodle library to load. This may either be:\n\
+                        - A library name that will be searched for in the system's default paths.\n\
+                        - A file path relative to the current working directory.\n\
+                        - An absolute file path.",
+        ))
         .subcommand(decompress::command_definition())
         .subcommand(extract::command_definition())
         .subcommand(inject::command_definition())