diff --git a/docs/development/overview.md b/docs/development/overview.md
index 10e2382e5d..4de5b24055 100644
--- a/docs/development/overview.md
+++ b/docs/development/overview.md
@@ -28,9 +28,7 @@ performs well.
 Zulip also supports a wide range of ways to install the Zulip
 development environment:
 
-* On **Ubuntu** 20.04 Focal, 18.04 Bionic, 16.04 Xenial, **Debian** 9
-  Stretch and 10 Buster, you can easily
-  **[install without using Vagrant][install-direct]**.
+* On popular Linux platforms, you can **[install directly][install-direct]**.
 * On **other Linux/UNIX** distributions, you'll need to follow slightly different
   instructions to **[install manually][install-generic]**.
 
diff --git a/docs/development/remote.md b/docs/development/remote.md
index 3b85bf4ee7..8fb399e6fb 100644
--- a/docs/development/remote.md
+++ b/docs/development/remote.md
@@ -5,8 +5,7 @@ be a good alternative for those with poor network connectivity or who have
 limited storage/memory on their local machines.
 
 We recommend giving the Zulip development environment its own virtual
-machine, running Ubuntu 16.04 or
-18.04, with at least 2GB of memory. If the Zulip development
+machine with at least 2GB of memory. If the Zulip development
 environment will be the only thing running on the remote virtual
 machine, we recommend installing
 [directly][install-direct]. Otherwise, we recommend the
diff --git a/docs/development/setup-advanced.md b/docs/development/setup-advanced.md
index be809a1586..be7f62e271 100644
--- a/docs/development/setup-advanced.md
+++ b/docs/development/setup-advanced.md
@@ -12,8 +12,8 @@ Contents:
 If you'd like to install a Zulip development environment on a computer
 that's running one of:
 
-* Ubuntu 20.04 Focal, 19.04 Disco, 18.10 Cosmic, 18.04 Bionic, 16.04 Xenial
-* Debian 9 Stretch or 10 Buster
+* Ubuntu 20.04 Focal, 18.04 Bionic
+* Debian 10 Buster
 * Centos 7 (beta)
 * Fedora 29 (beta)
 * RHEL 7 (beta)
diff --git a/docs/development/setup-vagrant.md b/docs/development/setup-vagrant.md
index 57c3da96ec..61d48de8d3 100644
--- a/docs/development/setup-vagrant.md
+++ b/docs/development/setup-vagrant.md
@@ -48,8 +48,8 @@ a proxy to access the internet.)
 
 - **All**: 2GB available RAM, Active broadband internet connection, [GitHub account][set-up-git].
 - **macOS**: macOS (10.11 El Capitan or newer recommended)
-- **Ubuntu LTS**: 18.04 or 16.04 64-bit
-  - or **Debian**: 9.0 "stretch" 64-bit
+- **Ubuntu LTS**: 20.04 or 18.04
+  - or **Debian**: 10 "buster"
 - **Windows**: Windows 64-bit (Win 10 recommended), hardware
   virtualization enabled (VT-x or AMD-V), administrator access.