diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9c01b1..4d05b63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@
 1. Reworked command line arguments to specify ACL table using --table:ACL option.
 2. Reworked sqlite3 implementation to replace the UPSERT with an ON CONFLICT REPLACE
    clause in the CREATE TABLE.
+3. Replaced os.Rename with lib implementation for tmpfs support.
 
 
 ## [0.8.5](https://github.com/uhppoted/uhppoted-app-db/releases/tag/v0.8.5) - 2023-06-13
diff --git a/TODO.md b/TODO.md
index aca8a05..bd2d49b 100644
--- a/TODO.md
+++ b/TODO.md
@@ -9,6 +9,7 @@
 - [x] MySQL support (cf. https://github.com/uhppoted/uhppoted-app-db/issues/1)
 - [x] Clean up DSN/DB logic
 - [x] sqlite3: replace UPSERTs with TABLE ON CONFLICT REPLACE clause
+- [x] Replace os.Rename with lib implementation for tmpfs support (cf. https://github.com/uhppoted/uhppoted-httpd/issues/20)
 
 ## TODO
 
diff --git a/commands/command.go b/commands/command.go
index 759dae8..5336349 100644
--- a/commands/command.go
+++ b/commands/command.go
@@ -10,6 +10,7 @@ import (
 	"github.com/uhppoted/uhppote-core/uhppote"
 	"github.com/uhppoted/uhppoted-lib/config"
 	"github.com/uhppoted/uhppoted-lib/lockfile"
+	lib "github.com/uhppoted/uhppoted-lib/os"
 
 	"github.com/uhppoted/uhppoted-app-db/log"
 )
@@ -119,7 +120,7 @@ func write(file string, bytes []byte) error {
 	dir := filepath.Dir(file)
 	if err := os.MkdirAll(dir, 0770); err != nil {
 		return err
-	} else if err := os.Rename(tmp.Name(), file); err != nil {
+	} else if err := lib.Rename(tmp.Name(), file); err != nil {
 		return err
 	}
 
diff --git a/go.mod b/go.mod
index f060154..69ffc05 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/mattn/go-sqlite3 v1.14.16
 	github.com/microsoft/go-mssqldb v1.1.0
 	github.com/uhppoted/uhppote-core v0.8.6-0.20230714164141-912d472ef6df
-	github.com/uhppoted/uhppoted-lib v0.8.6-0.20230714155133-57e68f2d1360
+	github.com/uhppoted/uhppoted-lib v0.8.6-0.20230801163955-16b4119234e5
 )
 
 require (
diff --git a/go.sum b/go.sum
index 775838c..b95fb53 100644
--- a/go.sum
+++ b/go.sum
@@ -44,8 +44,8 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/uhppoted/uhppote-core v0.8.6-0.20230714164141-912d472ef6df h1:HdvJy+Idu6E0xRdSeILN4qWt9iGfv7dM5KtoJisg8JA=
 github.com/uhppoted/uhppote-core v0.8.6-0.20230714164141-912d472ef6df/go.mod h1:q3xZZc7GMkCfpVnKNmdoZQDjvMHfPvH79VNai7HDH3s=
-github.com/uhppoted/uhppoted-lib v0.8.6-0.20230714155133-57e68f2d1360 h1:XaVqmMmjwskTrX6iCdUl2I4ezrvuoA/yhLzf/455E10=
-github.com/uhppoted/uhppoted-lib v0.8.6-0.20230714155133-57e68f2d1360/go.mod h1:3lLcVCtew+bIr0qftO/VsqmJLEoBaItX9rm9lLVusJE=
+github.com/uhppoted/uhppoted-lib v0.8.6-0.20230801163955-16b4119234e5 h1:B4RxLs3eVOZ0GQcQ7A865RSzErxcwnIflG49MGIv4Ls=
+github.com/uhppoted/uhppoted-lib v0.8.6-0.20230801163955-16b4119234e5/go.mod h1:3lLcVCtew+bIr0qftO/VsqmJLEoBaItX9rm9lLVusJE=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=