diff --git a/lectures/input_output.md b/lectures/input_output.md
index 320345ed..6c8fa595 100644
--- a/lectures/input_output.md
+++ b/lectures/input_output.md
@@ -21,8 +21,6 @@ This lecture requires the following imports and installs before we proceed.
 :tags: [hide-output]
 
 !pip install quantecon_book_networks==1.6
-!pip install quantecon
-!pip install pandas-datareader
 ```
 
 ```{code-cell} ipython3
diff --git a/lectures/networks.md b/lectures/networks.md
index c5866b97..dbecb6e3 100644
--- a/lectures/networks.md
+++ b/lectures/networks.md
@@ -16,7 +16,8 @@ kernelspec:
 ```{code-cell} ipython3
 :tags: [hide-output]
 
-!pip install quantecon-book-networks==1.6 pandas-datareader
+!pip install quantecon
+!pip install quantecon-book-networks==1.6
 ```
 
 ## Outline