diff --git a/changelog.d/improve-doc-debian-13.change b/changelog.d/improve-doc-debian-13.change
new file mode 100644
index 000000000..0fd7c6e45
--- /dev/null
+++ b/changelog.d/improve-doc-debian-13.change
@@ -0,0 +1 @@
+Update Debian and Ubuntu installation requirements and OTP dependencies
diff --git a/docs/installation/debian_based_en.md b/docs/installation/debian_based_en.md
index 30f48792d..f9086d2f9 100644
--- a/docs/installation/debian_based_en.md
+++ b/docs/installation/debian_based_en.md
@@ -4,7 +4,7 @@
 
 ## Installation
 
-This guide will assume you are on Debian 12 (“bookworm”) or later. This guide should also work with Ubuntu 22.04 (“jammy”) and later. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
+This guide will assume you are on Debian 13 (“Trixie”) or later. This guide should also work with Ubuntu 26.04 (“resolute”) and later. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
 
 {! backend/installation/generic_dependencies.include !}
 
diff --git a/docs/installation/otp_en.md b/docs/installation/otp_en.md
index 123dccf3a..5fc1db21e 100644
--- a/docs/installation/otp_en.md
+++ b/docs/installation/otp_en.md
@@ -32,6 +32,7 @@ Other than things bundled in the OTP release Pleroma depends on:
 * curl (to download the release build)
 * unzip (needed to unpack release builds)
 * ncurses (ERTS won't run without it)
+* libvips (for image processing)
 * PostgreSQL (also utilizes extensions in postgresql-contrib)
 * nginx (could be swapped with another reverse proxy but this guide covers only it)
 * certbot (for Let's Encrypt certificates, could be swapped with another ACME client, but this guide covers only it)
@@ -46,7 +47,13 @@ Other than things bundled in the OTP release Pleroma depends on:
 
 === "Debian/Ubuntu"
     ```
-    apt install curl unzip libncurses5 postgresql postgresql-contrib nginx certbot libmagic-dev
+    apt install curl unzip libncurses6 libvips42t64 postgresql postgresql-contrib nginx certbot libmagic-dev
+    ```
+
+    On Debian 12 and Ubuntu 22.04, replace `libvips42t64` with `libvips42`:
+
+    ```
+    apt install curl unzip libncurses6 libvips42 postgresql postgresql-contrib nginx certbot libmagic-dev
     ```
 
 ### Installing optional packages
@@ -88,9 +95,23 @@ RUM indexes are an alternative indexing scheme that is not included in PostgreSQ
     ```
 
 === "Debian/Ubuntu"
+    Install the package matching your distribution's PostgreSQL version:
+
     ```
-    # Available only on Buster/19.04
-    apt install postgresql-11-rum
+    # Debian 13
+    apt install postgresql-17-rum
+
+    # Debian 12
+    apt install postgresql-15-rum
+
+    # Ubuntu 26.04
+    apt install postgresql-18-rum
+
+    # Ubuntu 24.04
+    apt install postgresql-16-rum
+
+    # Ubuntu 22.04
+    apt install postgresql-14-rum
     ```
 
 #### (Optional) Performance configuration