diff --git a/.gitignore b/.gitignore
index 17d753d6a0..3252ee1f90 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .vscode/
+.idea/
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]
diff --git a/docs/installation.md b/docs/installation.md
index e1ed80f859..2e7fb79755 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -21,4 +21,10 @@ To install all modules needed for all integrations, run:
 
 ```
 pip install langchain[all]
+```
+
+Note that if you are using `zsh`, you'll need to quote square brackets when passing them as an argument to a command, for example:
+
+```
+pip install 'langchain[all]'
 ```
\ No newline at end of file