diff --git a/lib/generators/dockerfile_generator.rb b/lib/generators/dockerfile_generator.rb
index 1250d1d..5b8bb28 100644
--- a/lib/generators/dockerfile_generator.rb
+++ b/lib/generators/dockerfile_generator.rb
@@ -73,6 +73,7 @@ class DockerfileGenerator < Rails::Generators::Base
     "libtiff-dev" => "tiff-dev",
     "libjemalloc2" => "jemalloc",
     "libvips" => "vips-dev",
+    "libyaml-dev" => "yaml-dev",
     "node-gyp" => "gyp",
     "pkg-config" => "pkgconfig",
     "python" => "python3",
@@ -737,10 +738,10 @@ def base_requirements
 
   def build_packages
     # start with the essentials
-    packages = %w(build-essential)
+    packages = %w(build-essential libyaml-dev)
     packages += @@packages["build"] if @@packages["build"]
     packages += %w(nodejs npm) if (node_version == "lts") && (not using_execjs?)
-    packages << "libyaml-dev" if options.fullstaq?
+    packages << "libffi-dev" if  @@packages["ffi"]
 
     # add databases: sqlite3, postgres, mysql
     packages << "pkg-config" if options.sqlite3? || @sqlite3
diff --git a/test/results/alpine/Dockerfile b/test/results/alpine/Dockerfile
index ab730fa..94c67a0 100644
--- a/test/results/alpine/Dockerfile
+++ b/test/results/alpine/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems and node modules
 RUN apk update && \
-    apk add build-base gyp libpq-dev pkgconfig python3 && \
+    apk add build-base gyp libpq-dev pkgconfig python3 yaml-dev && \
     rm -rf /var/cache/apk/*
 
 # Install JavaScript dependencies
diff --git a/test/results/api/Dockerfile b/test/results/api/Dockerfile
index 1b4ee11..a81ab7c 100644
--- a/test/results/api/Dockerfile
+++ b/test/results/api/Dockerfile
@@ -52,7 +52,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/bin_cd/Dockerfile b/test/results/bin_cd/Dockerfile
index efefe64..c0dec6f 100644
--- a/test/results/bin_cd/Dockerfile
+++ b/test/results/bin_cd/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/bun/Dockerfile b/test/results/bun/Dockerfile
index 93c206e..c7dfdee 100644
--- a/test/results/bun/Dockerfile
+++ b/test/results/bun/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config unzip && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config unzip && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install Bun
diff --git a/test/results/cache/Dockerfile b/test/results/cache/Dockerfile
index 8c9dff4..0d32a32 100644
--- a/test/results/cache/Dockerfile
+++ b/test/results/cache/Dockerfile
@@ -38,7 +38,7 @@ FROM base AS build
 RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
     --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
     apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3
+    apt-get install --no-install-recommends -y build-essential libyaml-dev node-gyp pkg-config python-is-python3
 
 # Install JavaScript dependencies
 ARG NODE_VERSION=xxx
diff --git a/test/results/ci/Dockerfile b/test/results/ci/Dockerfile
index 5446d51..968ad2e 100644
--- a/test/results/ci/Dockerfile
+++ b/test/results/ci/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/env/Dockerfile b/test/results/env/Dockerfile
index 25fd6cf..7ba79fb 100644
--- a/test/results/env/Dockerfile
+++ b/test/results/env/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Build options
diff --git a/test/results/esbuild/Dockerfile b/test/results/esbuild/Dockerfile
index e69dcab..e88f42d 100644
--- a/test/results/esbuild/Dockerfile
+++ b/test/results/esbuild/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems and node modules
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3 && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev node-gyp pkg-config python-is-python3 && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install JavaScript dependencies
diff --git a/test/results/execjs_importmap/Dockerfile b/test/results/execjs_importmap/Dockerfile
index 63c74a9..826c32c 100644
--- a/test/results/execjs_importmap/Dockerfile
+++ b/test/results/execjs_importmap/Dockerfile
@@ -42,7 +42,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Build options
diff --git a/test/results/execjs_node/Dockerfile b/test/results/execjs_node/Dockerfile
index ef3ce85..a5378ab 100644
--- a/test/results/execjs_node/Dockerfile
+++ b/test/results/execjs_node/Dockerfile
@@ -42,7 +42,7 @@ FROM base AS build
 
 # Install packages needed to build gems and node modules
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3 && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev node-gyp pkg-config python-is-python3 && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install yarn
diff --git a/test/results/grover/Dockerfile b/test/results/grover/Dockerfile
index f877e9a..488c600 100644
--- a/test/results/grover/Dockerfile
+++ b/test/results/grover/Dockerfile
@@ -42,7 +42,7 @@ FROM base AS build
 
 # Install packages needed to build gems and node modules
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3 && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev node-gyp pkg-config python-is-python3 && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Build options
diff --git a/test/results/idle/Dockerfile b/test/results/idle/Dockerfile
index 0f9b0e6..f9dcf90 100644
--- a/test/results/idle/Dockerfile
+++ b/test/results/idle/Dockerfile
@@ -40,7 +40,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/jemalloc/Dockerfile b/test/results/jemalloc/Dockerfile
index 74d6035..17fe3c2 100644
--- a/test/results/jemalloc/Dockerfile
+++ b/test/results/jemalloc/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/label/Dockerfile b/test/results/label/Dockerfile
index e008975..4405b0a 100644
--- a/test/results/label/Dockerfile
+++ b/test/results/label/Dockerfile
@@ -37,7 +37,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/litefs/Dockerfile b/test/results/litefs/Dockerfile
index 9f525cf..e2b3af6 100644
--- a/test/results/litefs/Dockerfile
+++ b/test/results/litefs/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/litestream/Dockerfile b/test/results/litestream/Dockerfile
index ba383e5..d12c434 100644
--- a/test/results/litestream/Dockerfile
+++ b/test/results/litestream/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/minimal/Dockerfile b/test/results/minimal/Dockerfile
index fa410e3..a5d9872 100644
--- a/test/results/minimal/Dockerfile
+++ b/test/results/minimal/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/mysql/Dockerfile b/test/results/mysql/Dockerfile
index 8acd33b..711312e 100644
--- a/test/results/mysql/Dockerfile
+++ b/test/results/mysql/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential default-libmysqlclient-dev && \
+    apt-get install --no-install-recommends -y build-essential default-libmysqlclient-dev libyaml-dev && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/nginx/Dockerfile b/test/results/nginx/Dockerfile
index b6d9ffa..31f6f61 100644
--- a/test/results/nginx/Dockerfile
+++ b/test/results/nginx/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/no_precompiled_gems/Dockerfile b/test/results/no_precompiled_gems/Dockerfile
index 84ef231..b6927ce 100644
--- a/test/results/no_precompiled_gems/Dockerfile
+++ b/test/results/no_precompiled_gems/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/no_prep/Dockerfile b/test/results/no_prep/Dockerfile
index d2d8328..a94bc4a 100644
--- a/test/results/no_prep/Dockerfile
+++ b/test/results/no_prep/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/parallel/Dockerfile b/test/results/parallel/Dockerfile
index ab73386..4d433ca 100644
--- a/test/results/parallel/Dockerfile
+++ b/test/results/parallel/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS prebuild
 
 # Install packages needed to build gems and node modules
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3 && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev node-gyp pkg-config python-is-python3 && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 
diff --git a/test/results/postgresql/Dockerfile b/test/results/postgresql/Dockerfile
index c7ff96a..a7e87b9 100644
--- a/test/results/postgresql/Dockerfile
+++ b/test/results/postgresql/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential libpq-dev && \
+    apt-get install --no-install-recommends -y build-essential libpq-dev libyaml-dev && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/precompile_defer/Dockerfile b/test/results/precompile_defer/Dockerfile
index e9c4baa..6f30587 100644
--- a/test/results/precompile_defer/Dockerfile
+++ b/test/results/precompile_defer/Dockerfile
@@ -31,7 +31,7 @@ ENV BUNDLE_DEPLOYMENT="1" \
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/private_gemserver/Dockerfile b/test/results/private_gemserver/Dockerfile
index f324a7a..b78c84e 100644
--- a/test/results/private_gemserver/Dockerfile
+++ b/test/results/private_gemserver/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/private_gemserver_with_cache/Dockerfile b/test/results/private_gemserver_with_cache/Dockerfile
index b9b4b6a..9e2a14a 100644
--- a/test/results/private_gemserver_with_cache/Dockerfile
+++ b/test/results/private_gemserver_with_cache/Dockerfile
@@ -38,7 +38,7 @@ FROM base AS build
 RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
     --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
     apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config
 
 # Install application gems
 COPY Gemfile Gemfile.lock ./
diff --git a/test/results/redis/Dockerfile b/test/results/redis/Dockerfile
index b028598..fe22973 100644
--- a/test/results/redis/Dockerfile
+++ b/test/results/redis/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/rmagick/Dockerfile b/test/results/rmagick/Dockerfile
index 3f5bbd6..ae6c92d 100644
--- a/test/results/rmagick/Dockerfile
+++ b/test/results/rmagick/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential libmagickwand-dev pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libmagickwand-dev libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/shrine/Dockerfile b/test/results/shrine/Dockerfile
index fa410e3..a5d9872 100644
--- a/test/results/shrine/Dockerfile
+++ b/test/results/shrine/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/sidekiq/Dockerfile b/test/results/sidekiq/Dockerfile
index c7ff96a..a7e87b9 100644
--- a/test/results/sidekiq/Dockerfile
+++ b/test/results/sidekiq/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential libpq-dev && \
+    apt-get install --no-install-recommends -y build-essential libpq-dev libyaml-dev && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/solid_queue_postgres/Dockerfile b/test/results/solid_queue_postgres/Dockerfile
index c7ff96a..a7e87b9 100644
--- a/test/results/solid_queue_postgres/Dockerfile
+++ b/test/results/solid_queue_postgres/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential libpq-dev && \
+    apt-get install --no-install-recommends -y build-essential libpq-dev libyaml-dev && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/solid_queue_sqlite3/Dockerfile b/test/results/solid_queue_sqlite3/Dockerfile
index 50b2d15..575b690 100644
--- a/test/results/solid_queue_sqlite3/Dockerfile
+++ b/test/results/solid_queue_sqlite3/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/sqlite3/Dockerfile b/test/results/sqlite3/Dockerfile
index b028598..fe22973 100644
--- a/test/results/sqlite3/Dockerfile
+++ b/test/results/sqlite3/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/swap/Dockerfile b/test/results/swap/Dockerfile
index 8767c9f..3e2c3e7 100644
--- a/test/results/swap/Dockerfile
+++ b/test/results/swap/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/thruster/Dockerfile b/test/results/thruster/Dockerfile
index 979667a..7f15659 100644
--- a/test/results/thruster/Dockerfile
+++ b/test/results/thruster/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/trilogy/Dockerfile b/test/results/trilogy/Dockerfile
index b5c6872..5c48f58 100644
--- a/test/results/trilogy/Dockerfile
+++ b/test/results/trilogy/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/vite/Dockerfile b/test/results/vite/Dockerfile
index 1b64b65..432888f 100644
--- a/test/results/vite/Dockerfile
+++ b/test/results/vite/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems and node modules
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential node-gyp pkg-config python-is-python3 && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev node-gyp pkg-config python-is-python3 && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install Node.js
diff --git a/test/results/windows/Dockerfile b/test/results/windows/Dockerfile
index 5b4e963..1796a5c 100644
--- a/test/results/windows/Dockerfile
+++ b/test/results/windows/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems
diff --git a/test/results/yjit/Dockerfile b/test/results/yjit/Dockerfile
index 1c454b0..ee96296 100644
--- a/test/results/yjit/Dockerfile
+++ b/test/results/yjit/Dockerfile
@@ -35,7 +35,7 @@ FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential pkg-config && \
+    apt-get install --no-install-recommends -y build-essential libyaml-dev pkg-config && \
     rm -rf /var/lib/apt/lists /var/cache/apt/archives
 
 # Install application gems