diff --git a/dependencies_since_image.sh b/dependencies_common.sh
old mode 100755
new mode 100644
similarity index 83%
rename from dependencies_since_image.sh
rename to dependencies_common.sh
index 410d35b39e..74c9aea0a5
--- a/dependencies_since_image.sh
+++ b/dependencies_common.sh
@@ -2,8 +2,6 @@
 set -e
 set -x
 
-# Important: always use the python-X library if available,
-# rather than doing "pip install X".
 
 sudo apt install -y \
 	python-frozendict \
@@ -25,8 +23,11 @@ pip install --upgrade --user \
 	conftools \
 	comptests \
 	procgraph \
-	pymongo \
+	pymongo==3.5.1 \
 	ruamel.yaml==0.15.34
 
+
+
+
 # None of this should be needed. Next time you think you need it, let me know and we figure it out. -AC
 # sudo pip install --upgrade pip setuptools wheel
diff --git a/dependencies_for_duckiebot.sh b/dependencies_for_duckiebot.sh
new file mode 100755
index 0000000000..59beea4794
--- /dev/null
+++ b/dependencies_for_duckiebot.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+set -x
+
+# Important: always use the python-X library if available,
+# rather than doing "pip install X".
+
+./dependencies_common.sh
diff --git a/dependencies_for_laptop.sh b/dependencies_for_laptop.sh
index ac1f43b72f..ed71a35f39 100755
--- a/dependencies_for_laptop.sh
+++ b/dependencies_for_laptop.sh
@@ -2,27 +2,4 @@
 set -e
 set -x
 
-# Important: always use the python-X library if available,
-# rather than doing "pip install X".
-
-sudo apt install -y \
-	python-frozendict \
-	libxslt-dev \
-	libxml2-dev \
-	python-lxml \
-	python-bs4 \
-	python-tables
-
-sudo apt remove -y \
-	python-ruamel.yaml \
-	python-ruamel.ordereddict
-
-
-pip install --upgrade --user \
-	PyContracts \
-	QuickApp \
-	conftools \
-	comptests \
-	procgraph \
-	pymongo \
-	ruamel.yaml==0.15.34
+./dependencies_common.sh