diff --git a/src/cloud_functions/reencrypt_data/go.mod b/src/cloud_functions/reencrypt_data/go.mod
index da0149c..e40767d 100644
--- a/src/cloud_functions/reencrypt_data/go.mod
+++ b/src/cloud_functions/reencrypt_data/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/GoogleCloudPlatform/functions-framework-go v1.6.1
 	go.mongodb.org/mongo-driver v1.11.2
 	google.golang.org/api v0.110.0
-	google.golang.org/protobuf v1.28.1
+	google.golang.org/protobuf v1.31.0
 )
 
 require (
diff --git a/src/cloud_functions/reencrypt_data/go.sum b/src/cloud_functions/reencrypt_data/go.sum
index 256cd03..6cb3415 100644
--- a/src/cloud_functions/reencrypt_data/go.sum
+++ b/src/cloud_functions/reencrypt_data/go.sum
@@ -614,8 +614,8 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
-google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=