diff --git a/README.md b/README.md
index 04f0fe8..a30883c 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,7 @@ import {
   crypto_box_open_easy,
   crypto_box_PUBLICKEYBYTES,
   crypto_box_SECRETKEYBYTES,
+  crypto_kdf_CONTEXTBYTES,
   crypto_kdf_derive_from_key,
   crypto_kdf_KEYBYTES,
   crypto_kdf_keygen,
diff --git a/cpp/react-native-libsodium.cpp b/cpp/react-native-libsodium.cpp
index ff4645e..b12f2f3 100644
--- a/cpp/react-native-libsodium.cpp
+++ b/cpp/react-native-libsodium.cpp
@@ -25,6 +25,7 @@ void installLibsodium(jsi::Runtime &jsiRuntime)
   jsiRuntime.global().setProperty(jsiRuntime, "jsi_crypto_kdf_KEYBYTES", (int)crypto_kdf_KEYBYTES);
   jsiRuntime.global().setProperty(jsiRuntime, "jsi_crypto_pwhash_BYTES_MAX", (int)crypto_pwhash_BYTES_MAX);
   jsiRuntime.global().setProperty(jsiRuntime, "jsi_crypto_pwhash_BYTES_MIN", (int)crypto_pwhash_BYTES_MIN);
+  jsiRuntime.global().setProperty(jsiRuntime, "jsi_crypto_kdf_CONTEXTBYTES", (int)crypto_kdf_CONTEXTBYTES);
 
   auto jsi_from_base64_to_arraybuffer = jsi::Function::createFromHostFunction(
       jsiRuntime,
diff --git a/example/src/App.tsx b/example/src/App.tsx
index 08cab7c..d2a5091 100644
--- a/example/src/App.tsx
+++ b/example/src/App.tsx
@@ -13,6 +13,7 @@ import sodium, {
   crypto_box_open_easy,
   crypto_box_PUBLICKEYBYTES,
   crypto_box_SECRETKEYBYTES,
+  crypto_kdf_CONTEXTBYTES,
   crypto_kdf_derive_from_key,
   crypto_kdf_KEYBYTES,
   crypto_kdf_keygen,
@@ -69,8 +70,13 @@ function LibsodiumTests() {
     crypto_kdf_KEYBYTES,
     crypto_pwhash_BYTES_MIN,
     crypto_pwhash_BYTES_MAX,
+    crypto_kdf_CONTEXTBYTES,
   });
 
+  if (crypto_kdf_CONTEXTBYTES !== 8) {
+    throw new Error('crypto_kdf_CONTEXTBYTES not properly exported');
+  }
+
   const randombytes_buf_1 = randombytes_buf(1);
   const randombytes_buf_3 = randombytes_buf(3);
   const randombytes_buf_9 = randombytes_buf(9);
diff --git a/src/index.tsx b/src/index.tsx
index 261e19b..72c006e 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -31,6 +31,7 @@ declare global {
   var jsi_crypto_kdf_KEYBYTES: number;
   var jsi_crypto_pwhash_BYTES_MIN: number;
   var jsi_crypto_pwhash_BYTES_MAX: number;
+  var jsi_crypto_kdf_CONTEXTBYTES: number;
 
   function jsi_from_base64_to_arraybuffer(
     input: string,
@@ -176,6 +177,7 @@ export const crypto_aead_xchacha20poly1305_ietf_NPUBBYTES =
 export const crypto_kdf_KEYBYTES = global.jsi_crypto_kdf_KEYBYTES;
 export const crypto_pwhash_BYTES_MIN = global.jsi_crypto_pwhash_BYTES_MIN;
 export const crypto_pwhash_BYTES_MAX = global.jsi_crypto_pwhash_BYTES_MAX;
+export const crypto_kdf_CONTEXTBYTES = global.jsi_crypto_kdf_CONTEXTBYTES;
 
 export const from_base64 = (
   input: string,
@@ -668,6 +670,7 @@ export default {
   crypto_box_PUBLICKEYBYTES,
   crypto_box_SECRETKEYBYTES,
   crypto_kdf_derive_from_key,
+  crypto_kdf_CONTEXTBYTES,
   crypto_kdf_KEYBYTES,
   crypto_kdf_keygen,
   crypto_pwhash,