diff --git a/aider/website/assets/sample.aider.conf.yml b/aider/website/assets/sample.aider.conf.yml
index 54f2eb5f2..e3a790c4e 100644
--- a/aider/website/assets/sample.aider.conf.yml
+++ b/aider/website/assets/sample.aider.conf.yml
@@ -152,6 +152,9 @@
 ## Specify the aider ignore file (default: .aiderignore in git root)
 #aiderignore: .aiderignore
 
+## Only consider files in the current subtree of the git repository
+#subtree-only: false
+
 ## Enable/disable auto commit of LLM changes (default: True)
 #auto-commits: true
 
diff --git a/aider/website/assets/sample.env b/aider/website/assets/sample.env
index e1d18f307..b5c41b54c 100644
--- a/aider/website/assets/sample.env
+++ b/aider/website/assets/sample.env
@@ -156,6 +156,9 @@
 ## Specify the aider ignore file (default: .aiderignore in git root)
 #AIDER_AIDERIGNORE=.aiderignore
 
+## Only consider files in the current subtree of the git repository
+#AIDER_SUBTREE_ONLY=false
+
 ## Enable/disable auto commit of LLM changes (default: True)
 #AIDER_AUTO_COMMITS=true
 
diff --git a/aider/website/docs/config/aider_conf.md b/aider/website/docs/config/aider_conf.md
index 12596dc35..6943130f5 100644
--- a/aider/website/docs/config/aider_conf.md
+++ b/aider/website/docs/config/aider_conf.md
@@ -191,6 +191,9 @@ cog.outl("```")
 ## Specify the aider ignore file (default: .aiderignore in git root)
 #aiderignore: .aiderignore
 
+## Only consider files in the current subtree of the git repository
+#subtree-only: false
+
 ## Enable/disable auto commit of LLM changes (default: True)
 #auto-commits: true
 
diff --git a/aider/website/docs/config/dotenv.md b/aider/website/docs/config/dotenv.md
index 42bdbb4ac..816f2fd3a 100644
--- a/aider/website/docs/config/dotenv.md
+++ b/aider/website/docs/config/dotenv.md
@@ -198,6 +198,9 @@ cog.outl("```")
 ## Specify the aider ignore file (default: .aiderignore in git root)
 #AIDER_AIDERIGNORE=.aiderignore
 
+## Only consider files in the current subtree of the git repository
+#AIDER_SUBTREE_ONLY=false
+
 ## Enable/disable auto commit of LLM changes (default: True)
 #AIDER_AUTO_COMMITS=true
 
diff --git a/aider/website/docs/config/options.md b/aider/website/docs/config/options.md
index 785a7cdb5..c8fcff34e 100644
--- a/aider/website/docs/config/options.md
+++ b/aider/website/docs/config/options.md
@@ -43,7 +43,7 @@ usage: aider [-h] [--openai-api-key] [--anthropic-api-key] [--model]
              [--tool-error-color] [--assistant-output-color]
              [--code-theme] [--show-diffs] [--git | --no-git]
              [--gitignore | --no-gitignore] [--aiderignore]
-             [--auto-commits | --no-auto-commits]
+             [--subtree-only] [--auto-commits | --no-auto-commits]
              [--dirty-commits | --no-dirty-commits]
              [--attribute-author | --no-attribute-author]
              [--attribute-committer | --no-attribute-committer]
@@ -291,6 +291,11 @@ Specify the aider ignore file (default: .aiderignore in git root)
 Default: .aiderignore  
 Environment variable: `AIDER_AIDERIGNORE`  
 
+### `--subtree-only`
+Only consider files in the current subtree of the git repository  
+Default: False  
+Environment variable: `AIDER_SUBTREE_ONLY`  
+
 ### `--auto-commits`
 Enable/disable auto commit of LLM changes (default: True)  
 Default: True