diff --git a/examples/go-project.yaml b/examples/go-project.yaml
index 831e939..6dfe204 100644
--- a/examples/go-project.yaml
+++ b/examples/go-project.yaml
@@ -2,27 +2,17 @@ version: "1"
 
 tools:
   - name: go
-    version: ">=1.21.0"
-    required: true
-  - name: docker
-    required: true
-  - name: git
+    version: ">=1.18.0"
     required: true
 
 env_vars:
   - name: GOPATH
     required: false
-  - name: DATABASE_URL
-    required: true
-  - name: API_KEY
-    required: true
-
-ports:
-  - 8080
-  - 5432
+  - name: GOBIN
+    required: false
 
 files:
   - path: go.mod
     required: true
-  - path: .env
-    required: true
+  - path: main.go
+    required: false
diff --git a/examples/rails-project.yaml b/examples/rails-project.yaml
new file mode 100644
index 0000000..133c84c
--- /dev/null
+++ b/examples/rails-project.yaml
@@ -0,0 +1,30 @@
+version: "1"
+
+tools:
+  - name: ruby
+    version: ">=3.0.0"
+    required: true
+  - name: bundle
+    required: true
+  - name: node
+    required: false
+  - name: yarn
+    required: false
+
+env_vars:
+  - name: DATABASE_URL
+    required: true
+  - name: RAILS_ENV
+    required: false
+    pattern: "^(development|test|production)$"
+
+ports:
+  - 3000
+
+files:
+  - path: Gemfile
+    required: true
+  - path: config/database.yml
+    required: true
+  - path: .env
+    required: false
diff --git a/examples/rust-project.yaml b/examples/rust-project.yaml
index 424d293..e852676 100644
--- a/examples/rust-project.yaml
+++ b/examples/rust-project.yaml
@@ -2,19 +2,21 @@ version: "1"
 
 tools:
   - name: rustc
-    version: ">=1.70.0"
+    version: ">=1.65.0"
     required: true
   - name: cargo
     required: true
-  - name: git
-    required: true
 
 env_vars:
   - name: RUST_LOG
     required: false
+  - name: DATABASE_URL
+    required: false
 
 files:
   - path: Cargo.toml
     required: true
   - path: src/main.rs
-    required: true
+    required: false
+  - path: src/lib.rs
+    required: false