diff --git a/Cargo.toml b/Cargo.toml
index 5ec8117..cca2149 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,6 +32,7 @@ members = ["benchmarks"]
 [profile.release]
 lto = true
 codegen-units = 1
+debug = true
 
 [features]
 external_doc = []
diff --git a/benchmarks/Cargo.toml b/benchmarks/Cargo.toml
index 3a10847..8b536f3 100644
--- a/benchmarks/Cargo.toml
+++ b/benchmarks/Cargo.toml
@@ -17,3 +17,6 @@ crate-type = ["cdylib", "rlib"]
 [features]
 default = ["serde-json", "serde-wasm-bindgen"]
 serde-json = ["wasm-bindgen/serde-serialize"]
+
+[package.metadata.wasm-pack.profile.profiling]
+wasm-opt = ['-O', '-g']