diff --git a/changelog.d/openbsd-datasize-bump.change b/changelog.d/openbsd-datasize-bump.change
new file mode 100644
index 000000000..9085cc43a
--- /dev/null
+++ b/changelog.d/openbsd-datasize-bump.change
@@ -0,0 +1 @@
+Docs OpenBSD: Increased recommended `datasize` from 1536M to 4096M to avoid Pleroma crashes
diff --git a/docs/installation/openbsd_en.md b/docs/installation/openbsd_en.md
index 1de016cdd..82d137e96 100644
--- a/docs/installation/openbsd_en.md
+++ b/docs/installation/openbsd_en.md
@@ -67,13 +67,19 @@ Pleroma will be run by a dedicated \_pleroma user. Before creating it, insert th
 
 ```
 pleroma:\
-	:datasize=1536M:\
+	:datasize=4096M:\
 	:openfiles-max=4096:\
 	:openfiles-cur=1024:\
 	:setenv=LC_ALL=en_US.UTF-8,VIX_COMPILATION_MODE=PLATFORM_PROVIDED_LIBVIPS,MIX_ENV=prod:\
 	:tc=daemon:
 ```
 
+Then run:
+
+```
+# cap_mkdb /etc/login.conf
+```
+
 This creates a "pleroma" login class and sets higher values than default for datasize and openfiles (see [login.conf(5)](https://man.openbsd.org/login.conf)), this is required to avoid having Pleroma crash some time after starting.
 
 Create the \_pleroma user, assign it the pleroma login class and create its home directory (/home/\_pleroma/):