diff --git a/postBuild b/postBuild
index 01a30a85b..8835c1b77 100755
--- a/postBuild
+++ b/postBuild
@@ -19,5 +19,5 @@
 
 # Install PySpark manually because it does not exist in requirement file.
 # This file is used in Binder integration.
-pip install 'pyspark>=2.4,<=3.2' 'matplotlib>=3.0.0,<3.3.0' 'plotly>=4.8'
+pip install 'pyspark>=2.4,<3.2' 'matplotlib>=3.0.0,<3.3.0' 'plotly>=4.8'
 echo "export PYARROW_IGNORE_TIMEZONE=1" >> ~/.profile