diff --git a/gemfiles/activerecord60.gemfile b/gemfiles/activerecord60.gemfile
index 41e407b7..e924e1e7 100644
--- a/gemfiles/activerecord60.gemfile
+++ b/gemfiles/activerecord60.gemfile
@@ -9,3 +9,4 @@ gem "activerecord", "~> 6.0.0"
 gem "combustion"
 gem "pg"
 gem "pg_query", "~> 2"
+gem "google-protobuf", "< 4"
diff --git a/gemfiles/activerecord61.gemfile b/gemfiles/activerecord61.gemfile
index 587ef785..66a7472d 100644
--- a/gemfiles/activerecord61.gemfile
+++ b/gemfiles/activerecord61.gemfile
@@ -9,3 +9,4 @@ gem "activerecord", "~> 6.1.0"
 gem "combustion"
 gem "pg"
 gem "pg_query", "~> 2"
+gem "google-protobuf", "< 4"
diff --git a/gemfiles/activerecord70.gemfile b/gemfiles/activerecord70.gemfile
index b120f6f7..732ba986 100644
--- a/gemfiles/activerecord70.gemfile
+++ b/gemfiles/activerecord70.gemfile
@@ -9,3 +9,4 @@ gem "activerecord", "~> 7.0.0"
 gem "combustion"
 gem "pg"
 gem "pg_query", "~> 4"
+gem "google-protobuf", "< 4"