diff --git a/k8s/deployment.yaml b/k8s/deployment.yaml
index 09edfb6..0eacb80 100644
--- a/k8s/deployment.yaml
+++ b/k8s/deployment.yaml
@@ -22,7 +22,7 @@ spec:
         command: ["/bin/bash", "-c"]
         args:
           - |
-            apt-get update -qq && apt-get install -y build-essential libsqlite3-dev nodejs npm git curl
+            apt-get update -qq && apt-get install -y build-essential libsqlite3-dev nodejs npm git curl libyaml-dev
             gem install rails -v '8.1.0' --no-document
             cd /app
             if [ ! -f config/database.yml ]; then