diff --git a/.template.cross-link_ms-ambiguity.ipynb b/.template.cross-link_ms-ambiguity.ipynb
index 87baeb5..e0e67e1 100644
--- a/.template.cross-link_ms-ambiguity.ipynb
+++ b/.template.cross-link_ms-ambiguity.ipynb
@@ -53,9 +53,7 @@
    "outputs": [],
    "source": [
     "#%%colabonly\n",
-    "!echo \"deb https://integrativemodeling.org/latest/download $(lsb_release -cs)/\" > /etc/apt/sources.list.d/salilab.list\n",
-    "!wget -O /etc/apt/trusted.gpg.d/salilab.asc https://salilab.org/~ben/pubkey256.asc\n",
-    "!apt update\n",
+    "!add-apt-repository -y ppa:salilab/ppa\n",
     "!apt install imp\n",
     "import sys, os, glob\n",
     "sys.path.append(os.path.dirname(glob.glob('/usr/lib/python*/dist-packages/IMP')[0]))"
diff --git a/.template.cross-link_ms.ipynb b/.template.cross-link_ms.ipynb
index b607ac8..d493a43 100644
--- a/.template.cross-link_ms.ipynb
+++ b/.template.cross-link_ms.ipynb
@@ -31,9 +31,7 @@
    "outputs": [],
    "source": [
     "#%%colabonly\n",
-    "!echo \"deb https://integrativemodeling.org/latest/download $(lsb_release -cs)/\" > /etc/apt/sources.list.d/salilab.list\n",
-    "!wget -O /etc/apt/trusted.gpg.d/salilab.asc https://salilab.org/~ben/pubkey256.asc\n",
-    "!apt update\n",
+    "!add-apt-repository -y ppa:salilab/ppa\n",
     "!apt install imp\n",
     "import sys, os, glob\n",
     "sys.path.append(os.path.dirname(glob.glob('/usr/lib/python*/dist-packages/IMP')[0]))"
diff --git a/cross-link_ms-ambiguity-colab.ipynb b/cross-link_ms-ambiguity-colab.ipynb
index b57e00b..e79b394 100644
--- a/cross-link_ms-ambiguity-colab.ipynb
+++ b/cross-link_ms-ambiguity-colab.ipynb
@@ -44,9 +44,7 @@
       "metadata": {},
       "outputs": [],
       "source": [
-        "!echo \"deb https://integrativemodeling.org/latest/download $(lsb_release -cs)/\" > /etc/apt/sources.list.d/salilab.list\n",
-        "!wget -O /etc/apt/trusted.gpg.d/salilab.asc https://salilab.org/~ben/pubkey256.asc\n",
-        "!apt update\n",
+        "!add-apt-repository -y ppa:salilab/ppa\n",
         "!apt install imp\n",
         "import sys, os, glob\n",
         "sys.path.append(os.path.dirname(glob.glob('/usr/lib/python*/dist-packages/IMP')[0]))"
diff --git a/cross-link_ms-colab.ipynb b/cross-link_ms-colab.ipynb
index d47e65e..091dbbe 100644
--- a/cross-link_ms-colab.ipynb
+++ b/cross-link_ms-colab.ipynb
@@ -28,9 +28,7 @@
       "metadata": {},
       "outputs": [],
       "source": [
-        "!echo \"deb https://integrativemodeling.org/latest/download $(lsb_release -cs)/\" > /etc/apt/sources.list.d/salilab.list\n",
-        "!wget -O /etc/apt/trusted.gpg.d/salilab.asc https://salilab.org/~ben/pubkey256.asc\n",
-        "!apt update\n",
+        "!add-apt-repository -y ppa:salilab/ppa\n",
         "!apt install imp\n",
         "import sys, os, glob\n",
         "sys.path.append(os.path.dirname(glob.glob('/usr/lib/python*/dist-packages/IMP')[0]))"