diff --git a/manifest.toml b/manifest.toml
index 67a2a22..1eca909 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -86,6 +86,8 @@ ram.runtime = "50M"
         # For Ruby
 
         "libjemalloc-dev",
+        "libffi-dev",
+        "libyaml-dev",
         "curl",
         "build-essential",
         "libreadline-dev",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 1f749c9..89cabfd 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 
 ruby_version="3.2.2"
-
+bundler_version=2.1.4
 nodejs_version="18.15"
 
 # Workaround for Mastodon on Bullseye