diff --git a/uav/requirements.txt b/uav/requirements.txt
index f2ece8c7f..e41aa282d 100644
--- a/uav/requirements.txt
+++ b/uav/requirements.txt
@@ -4,14 +4,29 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-git+https://github.com/dronekit/dronekit-python.git@ed132c#egg=dronekit
+-e git+https://github.com/dronekit/dronekit-python.git@ed132c#egg=dronekit
+    # via
+    #   -r requirements.in
+    #   dronekit-sitl
 dronekit-sitl==3.2.0
+    # via -r requirements.in
 future==0.17.1
-lxml==4.3.0               # via pymavlink
+    # via
+    #   -r requirements.in
+    #   pymavlink
+lxml==4.6.5
+    # via pymavlink
 mavproxy==1.6.4
-monotonic==1.5
-psutil==5.6.6             # via dronekit-sitl
+    # via -r requirements.in
+psutil==5.6.6
+    # via dronekit-sitl
 pymavlink==2.3.4
-pyserial==3.4             # via mavproxy
+    # via
+    #   -r requirements.in
+    #   mavproxy
+pyserial==3.4
+    # via mavproxy
 simplejson==3.16.0
-six==1.12.0               # via dronekit-sitl
+    # via -r requirements.in
+six==1.12.0
+    # via dronekit-sitl