diff --git a/src/modules/nodejs.rs b/src/modules/nodejs.rs
index e1717a0a..100717f8 100644
--- a/src/modules/nodejs.rs
+++ b/src/modules/nodejs.rs
@@ -18,7 +18,12 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
         .set_folders(&["node_modules"])
         .is_match();
 
-    if !is_js_project {
+    let is_esy_project = context
+        .try_begin_scan()?
+        .set_folders(&["esy.lock"])
+        .is_match();
+
+    if !is_js_project || is_esy_project {
         return None;
     }
 
@@ -63,6 +68,19 @@ mod tests {
         dir.close()
     }
 
+    #[test]
+    fn folder_with_package_json_and_esy_lock() -> io::Result<()> {
+        let dir = tempfile::tempdir()?;
+        File::create(dir.path().join("package.json"))?.sync_all()?;
+        let esy_lock = dir.path().join("esy.lock");
+        fs::create_dir_all(&esy_lock)?;
+
+        let actual = render_module("nodejs", dir.path(), None);
+        let expected = None;
+        assert_eq!(expected, actual);
+        dir.close()
+    }
+
     #[test]
     fn folder_with_node_version() -> io::Result<()> {
         let dir = tempfile::tempdir()?;
diff --git a/src/modules/ocaml.rs b/src/modules/ocaml.rs
index ad61305c..be132b0e 100644
--- a/src/modules/ocaml.rs
+++ b/src/modules/ocaml.rs
@@ -24,7 +24,17 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
         return None;
     }
 
-    let ocaml_version = utils::exec_cmd("ocaml", &["-vnum"])?.stdout;
+    let is_esy_project = context
+        .try_begin_scan()?
+        .set_folders(&["esy.lock"])
+        .is_match();
+
+    let ocaml_version = if is_esy_project {
+        utils::exec_cmd("esy", &["ocaml", "-vnum"])?.stdout
+    } else {
+        utils::exec_cmd("ocaml", &["-vnum"])?.stdout
+    };
+
     let formatted_version = format!("v{}", &ocaml_version);
 
     let mut module = context.new_module("ocaml");
@@ -79,9 +89,13 @@ mod tests {
     fn folder_with_esy_lock_directory() -> io::Result<()> {
         let dir = tempfile::tempdir()?;
         fs::create_dir_all(dir.path().join("esy.lock"))?;
-
+        File::create(dir.path().join("package.json"))?.sync_all()?;
+        fs::write(
+            dir.path().join("package.lock"),
+            "{\"dependencies\": {\"ocaml\": \"4.8.1000\"}}",
+        )?;
         let actual = render_module("ocaml", dir.path(), None);
-        let expected = Some(format!("via {} ", Color::Yellow.bold().paint("🐫 v4.10.0")));
+        let expected = Some(format!("via {} ", Color::Yellow.bold().paint("🐫 v4.08.1")));
         assert_eq!(expected, actual);
         dir.close()
     }
diff --git a/src/utils.rs b/src/utils.rs
index ee7af608..79b8d883 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -87,6 +87,10 @@ active boot switches: -d:release\n",
             stdout: String::from("4.10.0"),
             stderr: String::default(),
         }),
+        "esy ocaml -vnum" => Some(CommandOutput {
+            stdout: String::from("4.08.1"),
+            stderr: String::default(),
+        }),
         "php -nr echo PHP_MAJOR_VERSION.'.'.PHP_MINOR_VERSION.'.'.PHP_RELEASE_VERSION;" => {
             Some(CommandOutput {
                 stdout: String::from("7.3.8"),