diff --git a/LambdAuthChangePassword/index.js b/LambdAuthChangePassword/index.js
index b54fa62..ab22005 100644
--- a/LambdAuthChangePassword/index.js
+++ b/LambdAuthChangePassword/index.js
@@ -14,7 +14,7 @@ function computeHash(password, salt, fn) {
 	var iterations = 4096;
 
 	if (3 == arguments.length) {
-		crypto.pbkdf2(password, salt, iterations, len, function(err, derivedKey) {
+		crypto.pbkdf2(password, salt, iterations, len, 'sha1', function(err, derivedKey) {
 			if (err) return fn(err);
 			else fn(null, salt, derivedKey.toString('base64'));
 		});
diff --git a/LambdAuthCreateUser/index.js b/LambdAuthCreateUser/index.js
index 84059d2..4b22526 100644
--- a/LambdAuthCreateUser/index.js
+++ b/LambdAuthCreateUser/index.js
@@ -22,7 +22,7 @@ function computeHash(password, salt, fn) {
 		crypto.randomBytes(len, function(err, salt) {
 			if (err) return fn(err);
 			salt = salt.toString('base64');
-			crypto.pbkdf2(password, salt, iterations, len, function(err, derivedKey) {
+			crypto.pbkdf2(password, salt, iterations, len, 'sha1', function(err, derivedKey) {
 				if (err) return fn(err);
 				fn(null, salt, derivedKey.toString('base64'));
 			});
diff --git a/LambdAuthLogin/index.js b/LambdAuthLogin/index.js
index 885b382..297d96f 100644
--- a/LambdAuthLogin/index.js
+++ b/LambdAuthLogin/index.js
@@ -15,7 +15,7 @@ function computeHash(password, salt, fn) {
 	var iterations = 4096;
 
 	if (3 == arguments.length) {
-		crypto.pbkdf2(password, salt, iterations, len, function(err, derivedKey) {
+		crypto.pbkdf2(password, salt, iterations, len, 'sha1', function(err, derivedKey) {
 			if (err) return fn(err);
 			else fn(null, salt, derivedKey.toString('base64'));
 		});
diff --git a/LambdAuthResetPassword/index.js b/LambdAuthResetPassword/index.js
index 8736984..11c7f91 100644
--- a/LambdAuthResetPassword/index.js
+++ b/LambdAuthResetPassword/index.js
@@ -14,7 +14,7 @@ function computeHash(password, salt, fn) {
 	var iterations = 4096;
 
 	if (3 == arguments.length) {
-		crypto.pbkdf2(password, salt, iterations, len, function(err, derivedKey) {
+		crypto.pbkdf2(password, salt, iterations, len, 'sha1', function(err, derivedKey) {
 			if (err) return fn(err);
 			else fn(null, salt, derivedKey.toString('base64'));
 		});
diff --git a/init.sh b/init.sh
index b630cb5..491257b 100755
--- a/init.sh
+++ b/init.sh
@@ -138,7 +138,7 @@ for f in $(ls -1|grep ^LambdAuth); do
   cd $f
   zip -r $f.zip index.js config.json
   aws lambda create-function --function-name ${f} \
-      --runtime nodejs4.3 \
+      --runtime nodejs10.x \
       --role arn:aws:iam::"$AWS_ACCOUNT_ID":role/${f} \
       --handler index.handler \
       --zip-file fileb://${f}.zip \