diff --git a/cmd/provision.go b/cmd/provision.go
index 6ee61b2..6b7a4c2 100644
--- a/cmd/provision.go
+++ b/cmd/provision.go
@@ -16,7 +16,8 @@ import (
 var Provision wisski_distillery.Command = pv{}
 
 type pv struct {
-	PHPVersion            string `short:"p" long:"php" description:"specific php version to use for instance. Should be one of '8.0', '8.1'."`
+	PHPVersion            string `short:"p" long:"php" description:"specific php version to use for instance. See 'provision --list-php-versions' for available versions. "`
+	ListPHPVersions       bool   `long:"list-php-versions" description:"List available php versions"`
 	IIPServer             bool   `short:"i" long:"iip-server" description:"enable iip-server inside this instance"`
 	OPCacheDevelopment    bool   `short:"o" long:"opcache-devel" description:"Include opcache development configuration"`
 	Flavor                string `short:"f" long:"flavor" description:"Use specific flavor. Use '--list-flavors' to list flavors. "`
@@ -33,7 +34,7 @@ var errMissingSlug = exit.Error{
 }
 
 func (pv pv) AfterParse() error {
-	if !pv.ListFlavors && pv.Positionals.Slug == "" {
+	if !pv.ListFlavors && !pv.ListPHPVersions && pv.Positionals.Slug == "" {
 		return errMissingSlug
 	}
 	return nil
@@ -60,6 +61,9 @@ func (p pv) Run(context wisski_distillery.Context) error {
 	if p.ListFlavors {
 		return p.listFlavors(context)
 	}
+	if p.ListPHPVersions {
+		return p.listPHPVersions(context)
+	}
 
 	instance, err := context.Environment.Provision().Provision(context.Stderr, context.Context, provision.Flags{
 		Slug:   p.Positionals.Slug,
@@ -90,3 +94,14 @@ func (pv) listFlavors(context wisski_distillery.Context) error {
 	encoder.Encode(manager.Profiles())
 	return nil
 }
+
+func (pv) listPHPVersions(context wisski_distillery.Context) error {
+	for _, v := range models.KnownPHPVersions() {
+		if v == models.DefaultPHPVersion {
+			context.Printf("%s (default)\n", v)
+		} else {
+			context.Println(v)
+		}
+	}
+	return nil
+}
diff --git a/cmd/rebuild.go b/cmd/rebuild.go
index cf2ba2a..27676a9 100644
--- a/cmd/rebuild.go
+++ b/cmd/rebuild.go
@@ -19,7 +19,7 @@ type rebuild struct {
 	Parallel int `short:"a" long:"parallel" description:"run on (at most) this many instances in parallel. 0 for no limit." default:"1"`
 
 	System                bool   `short:"s" long:"system-update" description:"Update the system configuration according to other flags"`
-	PHPVersion            string `short:"p" long:"php" description:"update to specific php version to use for instance. Should be one of '8.0', '8.1'."`
+	PHPVersion            string `short:"p" long:"php" description:"update to specific php version to use for instance. See 'provision --list-php-versions' for available versions. "`
 	IIPServer             bool   `short:"i" long:"iip-server" description:"enable iip-server inside this instance"`
 	OPCacheDevelopment    bool   `short:"o" long:"opcache-devel" description:"Include opcache development configuration"`
 	Flavor                string `short:"f" long:"flavor" description:"Use specific flavor. Use 'provision --list-flavors' to list flavors. "`
diff --git a/internal/models/instances_system.go b/internal/models/instances_system.go
index 8812c22..de72cf0 100644
--- a/internal/models/instances_system.go
+++ b/internal/models/instances_system.go
@@ -25,7 +25,7 @@ func (system System) OpCacheMode() string {
 }
 
 var (
-	phpVersions   = []string{"8.0", "8.1", "8.2"}
+	phpVersions   = []string{"8.1", "8.2", "8.3"}
 	phpVersionMap = (func() map[string]struct{} {
 		m := make(map[string]struct{}, len(phpVersions))
 		for _, v := range phpVersions {