diff --git a/compiler/can/src/effect_module.rs b/compiler/can/src/effect_module.rs
index 1c2f76d951..20cf8a9e3e 100644
--- a/compiler/can/src/effect_module.rs
+++ b/compiler/can/src/effect_module.rs
@@ -4,7 +4,7 @@ use crate::env::Env;
 use crate::expr::{ClosureData, Expr, Recursive};
 use crate::pattern::Pattern;
 use crate::scope::Scope;
-use roc_collections::all::{MutSet, SendMap};
+use roc_collections::all::{SendMap, VecSet};
 use roc_module::called_via::CalledVia;
 use roc_module::ident::TagName;
 use roc_module::symbol::Symbol;
@@ -39,7 +39,7 @@ pub(crate) fn build_effect_builtins(
     scope: &mut Scope,
     effect_symbol: Symbol,
     var_store: &mut VarStore,
-    exposed_symbols: &mut MutSet<Symbol>,
+    exposed_symbols: &mut VecSet<Symbol>,
     declarations: &mut Vec<Declaration>,
     generated_functions: HostedGeneratedFunctions,
 ) {
diff --git a/compiler/can/src/module.rs b/compiler/can/src/module.rs
index f6f8ce853b..bc1961acbf 100644
--- a/compiler/can/src/module.rs
+++ b/compiler/can/src/module.rs
@@ -23,7 +23,7 @@ use roc_types::types::{Alias, AliasKind, Type};
 pub struct Module {
     pub module_id: ModuleId,
     pub exposed_imports: MutMap<Symbol, Variable>,
-    pub exposed_symbols: MutSet<Symbol>,
+    pub exposed_symbols: VecSet<Symbol>,
     pub referenced_values: VecSet<Symbol>,
     pub referenced_types: VecSet<Symbol>,
     /// all aliases. `bool` indicates whether it is exposed
@@ -89,7 +89,7 @@ pub fn canonicalize_module_defs<'a>(
     dep_idents: &'a MutMap<ModuleId, IdentIds>,
     aliases: MutMap<Symbol, Alias>,
     exposed_imports: MutMap<Ident, (Symbol, Region)>,
-    exposed_symbols: &MutSet<Symbol>,
+    exposed_symbols: &VecSet<Symbol>,
     var_store: &mut VarStore,
 ) -> Result<ModuleOutput, RuntimeError> {
     let mut can_exposed_imports = MutMap::default();
@@ -319,7 +319,7 @@ pub fn canonicalize_module_defs<'a>(
                 generated_functions,
             }) = hosted_info
             {
-                let mut exposed_symbols = MutSet::default();
+                let mut exposed_symbols = VecSet::default();
 
                 // NOTE this currently builds all functions, not just the ones that the user requested
                 crate::effect_module::build_effect_builtins(
diff --git a/compiler/collections/src/all.rs b/compiler/collections/src/all.rs
index 01860a9e7f..879c2783a9 100644
--- a/compiler/collections/src/all.rs
+++ b/compiler/collections/src/all.rs
@@ -235,6 +235,12 @@ impl<T> Default for VecSet<T> {
 }
 
 impl<T: PartialEq> VecSet<T> {
+    pub fn with_capacity(capacity: usize) -> Self {
+        Self {
+            elements: Vec::with_capacity(capacity),
+        }
+    }
+
     pub fn insert(&mut self, value: T) -> bool {
         if self.elements.contains(&value) {
             true
diff --git a/compiler/load_internal/src/file.rs b/compiler/load_internal/src/file.rs
index 6c52590996..37ed5b1269 100644
--- a/compiler/load_internal/src/file.rs
+++ b/compiler/load_internal/src/file.rs
@@ -9,7 +9,7 @@ use roc_can::abilities::AbilitiesStore;
 use roc_can::constraint::{Constraint as ConstraintSoa, Constraints};
 use roc_can::def::Declaration;
 use roc_can::module::{canonicalize_module_defs, Module};
-use roc_collections::all::{default_hasher, BumpMap, MutMap, MutSet};
+use roc_collections::all::{default_hasher, BumpMap, MutMap, MutSet, VecSet};
 use roc_constrain::module::{
     constrain_builtin_imports, constrain_module, ExposedByModule, ExposedForModule,
     ExposedModuleTypes,
@@ -40,7 +40,7 @@ use roc_types::solved_types::Solved;
 use roc_types::subs::{Subs, VarStore, Variable};
 use roc_types::types::{Alias, AliasCommon, TypeExtension};
 use std::collections::hash_map::Entry::{Occupied, Vacant};
-use std::collections::{HashMap, HashSet};
+use std::collections::{HashMap, };
 use std::io;
 use std::iter;
 use std::ops::ControlFlow;
@@ -605,7 +605,7 @@ struct State<'a> {
 
     pub declarations_by_id: MutMap<ModuleId, Vec<Declaration>>,
 
-    pub exposed_symbols_by_module: MutMap<ModuleId, MutSet<Symbol>>,
+    pub exposed_symbols_by_module: MutMap<ModuleId, VecSet<Symbol>>,
 
     pub timings: MutMap<ModuleId, ModuleTiming>,
 
@@ -749,7 +749,7 @@ enum BuildTask<'a> {
         parsed: ParsedModule<'a>,
         module_ids: ModuleIds,
         dep_idents: MutMap<ModuleId, IdentIds>,
-        exposed_symbols: MutSet<Symbol>,
+        exposed_symbols: VecSet<Symbol>,
         aliases: MutMap<Symbol, Alias>,
     },
     Solve {
@@ -1680,8 +1680,7 @@ fn update<'a>(
             }
 
             // This was a dependency. Write it down and keep processing messages.
-            let mut exposed_symbols: MutSet<Symbol> =
-                HashSet::with_capacity_and_hasher(header.exposes.len(), default_hasher());
+            let mut exposed_symbols: VecSet<Symbol> = VecSet::with_capacity(header.exposes.len());
 
             // TODO can we avoid this loop by storing them as a Set in Header to begin with?
             for symbol in header.exposes.iter() {
@@ -3399,7 +3398,7 @@ fn canonicalize_and_constrain<'a>(
     arena: &'a Bump,
     module_ids: &ModuleIds,
     dep_idents: MutMap<ModuleId, IdentIds>,
-    exposed_symbols: MutSet<Symbol>,
+    exposed_symbols: VecSet<Symbol>,
     aliases: MutMap<Symbol, Alias>,
     parsed: ParsedModule<'a>,
 ) -> Result<Msg<'a>, LoadingProblem<'a>> {