diff --git a/README.rst b/README.rst
index b3ca424b..99c73d1f 100644
--- a/README.rst
+++ b/README.rst
@@ -23,7 +23,7 @@ The latest version of the library is 6.0.1 (`changelog <https://py-questdb-clien
 
 ::
 
-    python3 -m pip install -U questdb[dataframe]
+    python3 -m pip install -U 'questdb[dataframe]'
 
 Quickstart
 ==========
diff --git a/docs/installation.rst b/docs/installation.rst
index 3020dfa0..4ae5452e 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -57,12 +57,12 @@ PIP
 
 DataFrame ingest (pandas + pyarrow)::
 
-    python3 -m pip install -U questdb[dataframe]
+    python3 -m pip install -U 'questdb[dataframe]'
 
 polars or duckdb::
 
-    python3 -m pip install -U questdb[polars]
-    python3 -m pip install -U questdb[duckdb]
+    python3 -m pip install -U 'questdb[polars]'
+    python3 -m pip install -U 'questdb[duckdb]'
 
 Row-only::
 
@@ -73,9 +73,9 @@ Poetry
 
 Equivalents for poetry::
 
-    poetry add questdb[dataframe]
-    poetry add questdb[polars]
-    poetry add questdb[duckdb]
+    poetry add 'questdb[dataframe]'
+    poetry add 'questdb[polars]'
+    poetry add 'questdb[duckdb]'
     poetry add questdb