diff --git a/Cargo.lock b/Cargo.lock
index b3cf9e0..c91cfcd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "adler"
@@ -401,6 +401,7 @@ dependencies = [
  "once_cell",
  "rand",
  "regex",
+ "regex-lite",
  "ryu",
  "serde",
  "serde_json",
@@ -498,9 +499,9 @@ checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "parse-zoneinfo"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c705f256449c60da65e11ff6626e0c16a0a0b96aaa348de61376b249bc340f41"
+checksum = "1f2a05b18d44e2957b88f96ba460715e295bc1d7510468a2f3d3b44535d26c24"
 dependencies = [
  "regex",
 ]
@@ -734,6 +735,12 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "regex-lite"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53a49587ad06b26609c52e423de037e7f57f20d53535d66e08c695f347df952a"
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.3"
diff --git a/base/Cargo.toml b/base/Cargo.toml
index 0c9bb7d..b002af7 100644
--- a/base/Cargo.toml
+++ b/base/Cargo.toml
@@ -15,11 +15,17 @@ serde = { version = "1.0", features = ["derive"] }
 ryu = "1.0"
 chrono = "0.4"
 chrono-tz = "0.9"
-regex = "1.0"
+regex = { version = "1.0", optional = true}
+regex-lite = { version = "0.1.6", optional = true}
 once_cell = "1.16.0"
 bitcode = "0.6.0"
 csv = "1.3.0"
 
+[features]
+default = ["use_regex_full"]
+use_regex_full = ["regex"]
+use_regex_lite = ["regex-lite"]
+
 [dev-dependencies]
 serde_json = "1.0"
 
diff --git a/base/src/functions/util.rs b/base/src/functions/util.rs
index 96f1fb8..64dcfe4 100644
--- a/base/src/functions/util.rs
+++ b/base/src/functions/util.rs
@@ -1,4 +1,5 @@
-use regex::{escape, Regex};
+#[cfg(feature = "use_regex_lite")]
+use regex_lite as regex;
 
 use crate::{calc_result::CalcResult, expressions::token::is_english_error_string};
 
@@ -86,7 +87,7 @@ pub(crate) fn from_wildcard_to_regex(
     exact: bool,
 ) -> Result<regex::Regex, regex::Error> {
     // 1. Escape all
-    let reg = &escape(wildcard);
+    let reg = &regex::escape(wildcard);
 
     // 2. We convert the escaped '?' into '.' (matches a single character)
     let reg = &reg.replace("\\?", ".");
@@ -109,9 +110,9 @@ pub(crate) fn from_wildcard_to_regex(
 
     // And we have a valid Perl regex! (As Kim Kardashian said before me: "I know, right?")
     if exact {
-        return Regex::new(&format!("^{}$", reg));
+        return regex::Regex::new(&format!("^{}$", reg));
     }
-    Regex::new(reg)
+    regex::Regex::new(reg)
 }
 
 /// NUMBERS ///
@@ -203,7 +204,7 @@ fn result_is_not_equal_to_bool(calc_result: &CalcResult, target: bool) -> bool {
 
 /// Note that strings are case insensitive. `target` must always be lower case.
 
-pub(crate) fn result_matches_regex(calc_result: &CalcResult, reg: &Regex) -> bool {
+pub(crate) fn result_matches_regex(calc_result: &CalcResult, reg: &regex::Regex) -> bool {
     match calc_result {
         CalcResult::String(s) => reg.is_match(&s.to_lowercase()),
         _ => false,
diff --git a/bindings/wasm/Cargo.toml b/bindings/wasm/Cargo.toml
index 6f469ed..71155a0 100644
--- a/bindings/wasm/Cargo.toml
+++ b/bindings/wasm/Cargo.toml
@@ -14,7 +14,7 @@ crate-type = ["cdylib"]
 # Uses `../ironcalc/base` when used locally, and uses
 # the inicated version from crates.io when published.
 # https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#multiple-locations
-ironcalc_base = { path = "../../base", version = "0.2" }
+ironcalc_base = { path = "../../base", version = "0.2", features = ["use_regex_lite"] }
 serde = { version = "1.0", features = ["derive"] }
 wasm-bindgen = "0.2.92"
 serde-wasm-bindgen = "0.4"