diff --git a/src/bsconfig.rs b/src/bsconfig.rs
index 813a399..38beb22 100644
--- a/src/bsconfig.rs
+++ b/src/bsconfig.rs
@@ -1,6 +1,8 @@
-use serde::{Deserialize, Serialize};
+use serde::Deserialize;
+use std::fs;
 use std::path::{Path, PathBuf};
-use std::{fmt, fs};
+
+pub static DEFAULT_SUFFIX: &str = ".mjs";
 
 #[derive(Deserialize, Debug, Clone)]
 #[serde(untagged)]
@@ -121,28 +123,6 @@ pub enum JsxModule {
     React,
 }
 
-#[derive(Deserialize, Serialize, Debug, Clone)]
-pub enum Suffix {
-    #[serde(rename = ".js")]
-    Js,
-    #[serde(rename = ".mjs")]
-    Mjs,
-    #[serde(rename = ".cjs")]
-    Cjs,
-    #[serde(rename = ".bs.js")]
-    BsJs,
-    #[serde(rename = ".bs.mjs")]
-    BsMjs,
-    #[serde(rename = ".bs.cjs")]
-    BsCjs,
-}
-
-impl fmt::Display for Suffix {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", serde_json::to_value(self).unwrap().as_str().unwrap())
-    }
-}
-
 #[derive(Deserialize, Debug, Clone)]
 pub struct JsxSpecs {
     pub version: Option<i32>,
@@ -161,7 +141,7 @@ pub struct T {
     #[serde(rename = "package-specs")]
     pub package_specs: Option<OneOrMore<PackageSpec>>,
     pub warnings: Option<Warnings>,
-    pub suffix: Option<Suffix>,
+    pub suffix: Option<String>,
     #[serde(rename = "pinned-dependencies")]
     pub pinned_dependencies: Option<Vec<String>>,
     #[serde(rename = "bs-dependencies")]
diff --git a/src/build/build_types.rs b/src/build/build_types.rs
index 6713ad2..37a551e 100644
--- a/src/build/build_types.rs
+++ b/src/build/build_types.rs
@@ -117,7 +117,7 @@ pub struct AstModule {
     pub last_modified: SystemTime,
     pub ast_file_path: String,
     pub is_root: bool,
-    pub suffix: Option<crate::bsconfig::Suffix>,
+    pub suffix: Option<String>,
 }
 
 pub struct CompileAssetsState {
diff --git a/src/build/clean.rs b/src/build/clean.rs
index 63f24e3..8ee3249 100644
--- a/src/build/clean.rs
+++ b/src/build/clean.rs
@@ -31,7 +31,7 @@ fn remove_iast(source_file: &str, package_path: &str, root_path: &str, is_root:
     ));
 }
 
-fn remove_mjs_file(source_file: &str, suffix: &bsconfig::Suffix) {
+fn remove_mjs_file(source_file: &str, suffix: &String) {
     let _ = std::fs::remove_file(helpers::change_extension(
         source_file,
         // suffix.to_string includes the ., so we need to remove it
@@ -107,12 +107,12 @@ pub fn clean_mjs_files(build_state: &BuildState) {
                         .bsconfig
                         .suffix
                         .to_owned()
-                        .unwrap_or(bsconfig::Suffix::Mjs),
+                        .unwrap_or(String::from(bsconfig::DEFAULT_SUFFIX)),
                 ))
             }
             _ => None,
         })
-        .collect::<Vec<(String, bsconfig::Suffix)>>();
+        .collect::<Vec<(String, String)>>();
 
     rescript_file_locations
         .par_iter()
@@ -168,7 +168,9 @@ pub fn cleanup_previous_build(
             );
             remove_mjs_file(
                 &res_file_location,
-                &suffix.to_owned().unwrap_or(bsconfig::Suffix::Mjs),
+                &suffix
+                    .to_owned()
+                    .unwrap_or(String::from(bsconfig::DEFAULT_SUFFIX)),
             );
             remove_iast(
                 res_file_location,
diff --git a/src/build/compile.rs b/src/build/compile.rs
index a0b9ba6..64ab73d 100644
--- a/src/build/compile.rs
+++ b/src/build/compile.rs
@@ -499,7 +499,7 @@ fn compile_file(
         // TODO: Also read suffix from package-spec.
         let suffix = match root_package.bsconfig.suffix.to_owned() {
             Some(suffix) => suffix,
-            None => bsconfig::Suffix::Mjs,
+            None => String::from(bsconfig::DEFAULT_SUFFIX)
         };
 
         vec![