diff --git a/BUILDING_ON_LINUX.md b/BUILDING_ON_LINUX.md
index d2f33fd41..c6405c660 100644
--- a/BUILDING_ON_LINUX.md
+++ b/BUILDING_ON_LINUX.md
@@ -1,5 +1,7 @@
 # Linux
 
+Note on Qt version compatibility: If you are installing Qt from a package manager, please ensure the version you are installing is at least **Qt 5.10 or newer**.
+
 ## Ubuntu 18.04
 *most likely works the same for other Debian-like distros*
 1. Install dependencies (and the C++ IDE Qt Creator) `sudo apt install qtcreator qtmultimedia5-dev libqt5svg5-dev libboost-dev libssl-dev libboost-system-dev`
diff --git a/BUILDING_ON_MAC.md b/BUILDING_ON_MAC.md
index c09d97d24..597f66fa6 100644
--- a/BUILDING_ON_MAC.md
+++ b/BUILDING_ON_MAC.md
@@ -1,5 +1,5 @@
 # Building on macOS
-#### Note - If you want to develop Chatterino 2 you will also need to install Qt Creator
+#### Note - If you want to develop Chatterino 2 you will also need to install Qt Creator (make sure to install **Qt 5.10 or newer**)
 1. Install Xcode and Xcode Command Line Utilites
 2. Start Xcode, settings -> Locations, activate your Command Line Tools
 3. Install brew https://brew.sh/
diff --git a/BUILDING_ON_WINDOWS.md b/BUILDING_ON_WINDOWS.md
index 9ddc09973..139342ab5 100644
--- a/BUILDING_ON_WINDOWS.md
+++ b/BUILDING_ON_WINDOWS.md
@@ -48,7 +48,9 @@ Note: This installation will take about 200 MB of disk space.
 2. Select "Open source" at the bottom of this page
 3. Then select "Download"
 
-Note that creating/linking an account with your Qt installation is entirely optional, you may simply click "Skip" in the installer instead of entering any information.
+Notes:
+  - Creating/linking an account with your Qt installation is entirely optional, you may simply click "Skip" in the installer instead of entering any information.
+  - Installing the latest Qt version is advised for new installations, but if you want to use your existing installation please ensure you are running **Qt 5.10 or later**.
 
 ### When prompted which components to install: