diff --git a/modules/authentik/.terraform.lock.hcl b/modules/authentik/.terraform.lock.hcl
new file mode 100644
index 0000000..28423cf
--- /dev/null
+++ b/modules/authentik/.terraform.lock.hcl
@@ -0,0 +1,23 @@
+# This file is maintained automatically by "tofu init".
+# Manual edits may be lost in future updates.
+
+provider "registry.opentofu.org/goauthentik/authentik" {
+  version     = "2026.5.0"
+  constraints = ">= 2026.5.0"
+  hashes = [
+    "h1:SeznjPKBzSrgo8WasRnuxiGMDSeQHEKsv3U/xw8bhQE=",
+    "zh:0dc1706f6fbff866f4a96de56a4934b9a277954bcdd0713549a29a9b8ec85153",
+    "zh:218417ec4e864f2d7e585d6c08d39bccb96d8f3bca16c6f762be15365e434234",
+    "zh:24f9afa7a1174316da3478811848cd76ef348d8a983310b8d75ed6f45abe1a92",
+    "zh:560092e47cb8a72b890b3eeafe1803202cd25cf27f5f5a6e2c370f645f5d86ae",
+    "zh:5bc69d8de198007ad1587e146f98cffacf0d1a571800da549b308ff5f4541474",
+    "zh:65248dce941472ad2a30d0754d2f3c2db6bb6fe5080946316fb097d6ba7cc79f",
+    "zh:79c9a59a8d3c60280e27a064668889594da44c60f940b046b7c8e63be01067d0",
+    "zh:87f26cadcd842d6e6d0af94ef0e56860557f5d07f487b10d69d38b63af68bea5",
+    "zh:8e42c9d0e77d61cc2e5f8c8b761f6e484774d93771927b4cb5fbdae41209dd33",
+    "zh:94ff632b9b4841527c6b652d51a850a8a47c84c0308a3efc189e0ff7e2558f87",
+    "zh:b8d32d9f17a905b63c87a23306c02c295b7c8b70f72950071aa3086396932816",
+    "zh:c91982af99474fc2e4e69be36ed3a68847f261963ed79f6a546fc75703992f99",
+    "zh:eb9c1fd3020cf61e9b7a6a38d2965f4b521495a9928705e963459a4af857f97d",
+  ]
+}
diff --git a/modules/authentik/main.tf b/modules/authentik/main.tf
index b8fba79..b5190e0 100644
--- a/modules/authentik/main.tf
+++ b/modules/authentik/main.tf
@@ -3,7 +3,7 @@ resource "authentik_group" "this" {
 
   name         = each.value.name
   is_superuser = each.value.is_superuser
-  parent       = each.value.parent != null ? authentik_group.this[each.value.parent].id : null
+  parents      = each.value.parents != null ? [for p in each.value.parents : authentik_group.this[p].id] : []
   attributes   = jsonencode(each.value.attributes)
 }
 
@@ -12,8 +12,8 @@ resource "authentik_provider_saml" "this" {
 
   name               = each.value.name
   authorization_flow = each.value.authorization_flow
+  invalidation_flow  = each.value.invalidation_flow
   acs_url            = each.value.acs_url
-  issuer             = each.value.issuer
   sp_binding         = each.value.sp_binding
   audience           = each.value.audience
   name_id_mapping    = each.value.name_id_mapping
@@ -23,32 +23,31 @@ resource "authentik_provider_saml" "this" {
 resource "authentik_provider_oauth2" "this" {
   for_each = var.providers_oauth2
 
-  name               = each.value.name
-  authorization_flow = each.value.authorization_flow
-  client_type        = each.value.client_type
-  client_id          = each.value.client_id
-  client_secret      = each.value.client_secret
-  redirect_uris      = each.value.redirect_uris
-  property_mappings  = each.value.property_mappings
-  signing_key        = each.value.signing_key
+  name                  = each.value.name
+  authorization_flow    = each.value.authorization_flow
+  invalidation_flow     = each.value.invalidation_flow
+  client_type           = each.value.client_type
+  client_id             = each.value.client_id
+  client_secret         = each.value.client_secret
+  property_mappings     = each.value.property_mappings
+  signing_key           = each.value.signing_key
   access_token_validity = each.value.access_token_validity
 }
 
 resource "authentik_provider_ldap" "this" {
   for_each = var.providers_ldap
 
-  name               = each.value.name
-  authorization_flow = each.value.authorization_flow
-  base_dn            = each.value.base_dn
-  bind_flow          = each.value.bind_flow
-  search_group       = each.value.search_group
-  certificate        = each.value.certificate
-  tls_server_name    = each.value.tls_server_name
-  uid_start_number   = each.value.uid_start_number
-  gid_start_number   = each.value.gid_start_number
-  search_mode        = each.value.search_mode
-  bind_mode          = each.value.bind_mode
-  mfa_support        = each.value.mfa_support
+  name             = each.value.name
+  bind_flow        = each.value.bind_flow
+  unbind_flow      = each.value.unbind_flow
+  base_dn          = each.value.base_dn
+  certificate      = each.value.certificate
+  tls_server_name  = each.value.tls_server_name
+  uid_start_number = each.value.uid_start_number
+  gid_start_number = each.value.gid_start_number
+  search_mode      = each.value.search_mode
+  bind_mode        = each.value.bind_mode
+  mfa_support      = each.value.mfa_support
 }
 
 resource "authentik_application" "saml" {
@@ -81,5 +80,4 @@ resource "authentik_outpost" "ldap" {
   name               = "${each.key}-outpost"
   type               = "ldap"
   protocol_providers = [authentik_provider_ldap.this[each.key].id]
-  service_connection = "local"
 }
diff --git a/modules/authentik/variables.tf b/modules/authentik/variables.tf
index e40db37..9095a19 100644
--- a/modules/authentik/variables.tf
+++ b/modules/authentik/variables.tf
@@ -1,9 +1,9 @@
 variable "groups" {
   type = map(object({
-    name       = string
+    name         = string
     is_superuser = optional(bool, false)
-    parent     = optional(string, null)
-    attributes = optional(map(string), {})
+    parents      = optional(list(string), null)
+    attributes   = optional(map(string), {})
   }))
   default = {}
 }
@@ -12,9 +12,9 @@ variable "providers_saml" {
   type = map(object({
     name               = string
     authorization_flow = string
+    invalidation_flow  = string
     acs_url            = string
-    issuer             = optional(string, null)
-    sp_binding         = optional(string, "post")
+    sp_binding         = optional(string, "redirect")
     audience           = optional(string, "")
     name_id_mapping    = optional(string, null)
     signing_kp         = optional(string, null)
@@ -24,33 +24,32 @@ variable "providers_saml" {
 
 variable "providers_oauth2" {
   type = map(object({
-    name               = string
-    authorization_flow = string
-    client_type        = optional(string, "confidential")
-    client_id          = optional(string, null)
-    client_secret      = optional(string, null)
-    redirect_uris      = optional(list(string), [])
-    property_mappings  = optional(list(string), [])
-    signing_key        = optional(string, null)
-    access_token_validity = optional(string, "minutes=5")
+    name                  = string
+    authorization_flow    = string
+    invalidation_flow     = string
+    client_type           = optional(string, "confidential")
+    client_id             = string
+    client_secret         = optional(string, null)
+    property_mappings     = optional(list(string), [])
+    signing_key           = optional(string, null)
+    access_token_validity = optional(string, "minutes=10")
   }))
   default = {}
 }
 
 variable "providers_ldap" {
   type = map(object({
-    name               = string
-    authorization_flow = string
-    base_dn            = string
-    bind_flow          = optional(string, null)
-    search_group       = optional(string, null)
-    certificate        = optional(string, null)
-    tls_server_name    = optional(string, null)
-    uid_start_number   = optional(number, 2000)
-    gid_start_number   = optional(number, 4000)
-    search_mode        = optional(string, "cached")
-    bind_mode          = optional(string, "cached")
-    mfa_support        = optional(bool, true)
+    name             = string
+    bind_flow        = string
+    unbind_flow      = string
+    base_dn          = string
+    certificate      = optional(string, null)
+    tls_server_name  = optional(string, null)
+    uid_start_number = optional(number, 2000)
+    gid_start_number = optional(number, 4000)
+    search_mode      = optional(string, "direct")
+    bind_mode        = optional(string, "direct")
+    mfa_support      = optional(bool, true)
   }))
   default = {}
 }
diff --git a/modules/authentik/versions.tf b/modules/authentik/versions.tf
new file mode 100644
index 0000000..af40006
--- /dev/null
+++ b/modules/authentik/versions.tf
@@ -0,0 +1,9 @@
+terraform {
+  required_version = ">= 1.10"
+  required_providers {
+    authentik = {
+      source  = "goauthentik/authentik"
+      version = ">= 2026.5.0"
+    }
+  }
+}