diff --git a/Cargo.lock b/Cargo.lock
index bca3abd..677cbf7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -437,7 +437,6 @@ dependencies = [
  "chrono-tz",
  "csv",
  "js-sys",
- "once_cell",
  "rand",
  "regex",
  "regex-lite",
diff --git a/base/Cargo.toml b/base/Cargo.toml
index e43def8..cb97b34 100644
--- a/base/Cargo.toml
+++ b/base/Cargo.toml
@@ -17,7 +17,6 @@ chrono = "0.4"
 chrono-tz = "0.10"
 regex = { version = "1.0", optional = true}
 regex-lite = { version = "0.1.6", optional = true}
-once_cell = "1.16.0"
 bitcode = "0.6.3"
 csv = "1.3.0"
 
diff --git a/base/src/expressions/parser/static_analysis.rs b/base/src/expressions/parser/static_analysis.rs
index 280ac24..0a87447 100644
--- a/base/src/expressions/parser/static_analysis.rs
+++ b/base/src/expressions/parser/static_analysis.rs
@@ -2,15 +2,18 @@ use crate::functions::Function;
 
 use super::Node;
 
-use once_cell::sync::Lazy;
 use regex::Regex;
+use std::sync::OnceLock;
+
+static RE: OnceLock<Regex> = OnceLock::new();
 
 #[allow(clippy::expect_used)]
-static RE: Lazy<Regex> =
-    Lazy::new(|| Regex::new(r":[A-Z]*[0-9]*$").expect("Regex is known to be valid"));
+fn get_re() -> &'static Regex {
+    RE.get_or_init(|| Regex::new(r":[A-Z]*[0-9]*$").expect("Regex is known to be valid"))
+}
 
 fn is_range_reference(s: &str) -> bool {
-    RE.is_match(s)
+    get_re().is_match(s)
 }
 
 /*
diff --git a/base/src/language/mod.rs b/base/src/language/mod.rs
index 40fe49e..31a2a11 100644
--- a/base/src/language/mod.rs
+++ b/base/src/language/mod.rs
@@ -1,7 +1,6 @@
-use std::collections::HashMap;
+use std::{collections::HashMap, sync::OnceLock};
 
 use bitcode::{Decode, Encode};
-use once_cell::sync::Lazy;
 
 #[derive(Encode, Decode, Clone)]
 pub struct Booleans {
@@ -31,14 +30,17 @@ pub struct Language {
     pub errors: Errors,
 }
 
+static LANGUAGES: OnceLock<HashMap<String, Language>> = OnceLock::new();
+
 #[allow(clippy::expect_used)]
-static LANGUAGES: Lazy<HashMap<String, Language>> = Lazy::new(|| {
-    bitcode::decode(include_bytes!("language.bin")).expect("Failed parsing language file")
-});
+fn get_languages() -> &'static HashMap<String, Language> {
+    LANGUAGES.get_or_init(|| {
+        bitcode::decode(include_bytes!("language.bin")).expect("Failed parsing language file")
+    })
+}
 
 pub fn get_language(id: &str) -> Result<&Language, String> {
-    let language = LANGUAGES
+    get_languages()
         .get(id)
-        .ok_or(format!("Language is not supported: '{id}'"))?;
-    Ok(language)
+        .ok_or_else(|| format!("Language is not supported: '{id}'"))
 }
diff --git a/base/src/locale/mod.rs b/base/src/locale/mod.rs
index 3d7ba3c..fe584a6 100644
--- a/base/src/locale/mod.rs
+++ b/base/src/locale/mod.rs
@@ -1,7 +1,6 @@
-use bitcode::{Decode, Encode};
-use once_cell::sync::Lazy;
+use std::{collections::HashMap, sync::OnceLock};
 
-use std::collections::HashMap;
+use bitcode::{Decode, Encode};
 
 #[derive(Encode, Decode, Clone)]
 pub struct Locale {
@@ -65,12 +64,17 @@ pub struct DecimalFormats {
     pub standard: String,
 }
 
+static LOCALES: OnceLock<HashMap<String, Locale>> = OnceLock::new();
+
 #[allow(clippy::expect_used)]
-static LOCALES: Lazy<HashMap<String, Locale>> =
-    Lazy::new(|| bitcode::decode(include_bytes!("locales.bin")).expect("Failed parsing locale"));
+fn get_locales() -> &'static HashMap<String, Locale> {
+    LOCALES.get_or_init(|| {
+        bitcode::decode(include_bytes!("locales.bin")).expect("Failed parsing locale")
+    })
+}
 
 pub fn get_locale(id: &str) -> Result<&Locale, String> {
-    // TODO: pass the locale once we implement locales in Rust
-    let locale = LOCALES.get(id).ok_or("Invalid locale")?;
-    Ok(locale)
+    get_locales()
+        .get(id)
+        .ok_or_else(|| "Invalid locale".to_string())
 }