diff --git a/01_query.ipynb b/01_query.ipynb
index 6c83c6a..a2f517a 100644
--- a/01_query.ipynb
+++ b/01_query.ipynb
@@ -136,7 +136,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install [Astroquery](https://astroquery.readthedocs.io/en/latest/) and [Gala](https://gala-astro.readthedocs.io/en/latest/).\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll need.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
@@ -157,7 +157,7 @@
     "IN_COLAB = 'google.colab' in sys.modules\n",
     "\n",
     "if IN_COLAB:\n",
-    "    !pip install astroquery astro-gala"
+    "    !pip install astroquery"
    ]
   },
   {
diff --git a/02_coords.ipynb b/02_coords.ipynb
index 2f799a0..5521593 100644
--- a/02_coords.ipynb
+++ b/02_coords.ipynb
@@ -93,7 +93,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install Astroquery and the other libraries we'll use.\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll use.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
@@ -114,7 +114,7 @@
     "IN_COLAB = 'google.colab' in sys.modules\n",
     "\n",
     "if IN_COLAB:\n",
-    "    !pip install astroquery gala"
+    "    !pip install astroquery astro-gala"
    ]
   },
   {
diff --git a/03_motion.ipynb b/03_motion.ipynb
index 267739e..e89d8bc 100644
--- a/03_motion.ipynb
+++ b/03_motion.ipynb
@@ -100,7 +100,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install Astroquery and the other libraries we'll use.\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll use.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
diff --git a/04_select.ipynb b/04_select.ipynb
index 3b4aae4..b41a4db 100644
--- a/04_select.ipynb
+++ b/04_select.ipynb
@@ -93,7 +93,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install Astroquery and the other libraries we'll use.\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll use.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
diff --git a/05_join.ipynb b/05_join.ipynb
index cb8de3d..3ea1a27 100644
--- a/05_join.ipynb
+++ b/05_join.ipynb
@@ -80,7 +80,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install Astroquery and the other libraries we'll use.\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll use.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
@@ -101,7 +101,7 @@
     "IN_COLAB = 'google.colab' in sys.modules\n",
     "\n",
     "if IN_COLAB:\n",
-    "    !pip install astroquery astro-gala wget"
+    "    !pip install astroquery wget"
    ]
   },
   {
diff --git a/06_photo.ipynb b/06_photo.ipynb
index de427b3..049ba87 100644
--- a/06_photo.ipynb
+++ b/06_photo.ipynb
@@ -86,7 +86,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install Astroquery and the other libraries we'll use.\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll use.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
@@ -107,7 +107,7 @@
     "IN_COLAB = 'google.colab' in sys.modules\n",
     "\n",
     "if IN_COLAB:\n",
-    "    !pip install astroquery astro-gala wget"
+    "    !pip install wget"
    ]
   },
   {
diff --git a/07_plot.ipynb b/07_plot.ipynb
index 93eff38..e335531 100644
--- a/07_plot.ipynb
+++ b/07_plot.ipynb
@@ -83,7 +83,7 @@
    "source": [
     "## Installing libraries\n",
     "\n",
-    "If you are running this notebook on Colab, you can run the following cell to install Astroquery and the other libraries we'll use.\n",
+    "If you are running this notebook on Colab, you can run the following cell to install the libraries we'll use.\n",
     "\n",
     "If you are running this notebook on your own computer, you might have to install these libraries yourself.  See the instructions in the preface."
    ]
@@ -104,7 +104,7 @@
     "IN_COLAB = 'google.colab' in sys.modules\n",
     "\n",
     "if IN_COLAB:\n",
-    "    !pip install astroquery astro-gala wget"
+    "    !pip install wget"
    ]
   },
   {