diff --git a/Cargo.lock b/Cargo.lock
index f1e3c34..ac775d7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -552,8 +552,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "wasi",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -625,6 +627,7 @@ name = "idfoto-wasm"
 version = "0.1.0"
 dependencies = [
  "data-encoding",
+ "getrandom",
  "hmac",
  "idfoto-core",
  "js-sys",
diff --git a/crates/idfoto-wasm/Cargo.toml b/crates/idfoto-wasm/Cargo.toml
index bd659c8..efd3f53 100644
--- a/crates/idfoto-wasm/Cargo.toml
+++ b/crates/idfoto-wasm/Cargo.toml
@@ -15,6 +15,7 @@ serde_json = "1"
 hmac = "0.12"
 sha1 = "0.10"
 data-encoding = "2"
+getrandom = { version = "0.2", features = ["js"] }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3"