diff --git a/collections/user.yml b/collections/user.yml
index b1c372c7..8598e752 100644
--- a/collections/user.yml
+++ b/collections/user.yml
@@ -16,6 +16,11 @@ saml_id:
   minLength: 1
   restriction_mode: B
   description: unique-key from IdP for SAML login
+keycloak_id:
+  type: string
+  minLength: 1
+  restriction_mode: B
+  description: unique-key from Keycloak for OIDC login (sub claim)
 pronoun:
   type: string
   maxLength: 32
diff --git a/dev/sql/schema_relational.sql b/dev/sql/schema_relational.sql
index 24093a5e..bad52b1f 100644
--- a/dev/sql/schema_relational.sql
+++ b/dev/sql/schema_relational.sql
@@ -1,7 +1,7 @@
 
 -- schema_relational.sql for initial database setup OpenSlides
 -- Code generated. DO NOT EDIT.
--- MODELS_YML_CHECKSUM = 'e0d5579236d105d49e687ac5999f0184'
+-- MODELS_YML_CHECKSUM = '14017a938413f084ab18b4a3d4418765'
 
 
 -- Function and meta table definitions
@@ -1392,6 +1392,7 @@ CREATE TABLE user_t (
     username varchar(256) NOT NULL,
     member_number varchar(256),
     saml_id varchar(256) CONSTRAINT minlength_saml_id CHECK (char_length(saml_id) >= 1),
+    keycloak_id varchar(256) CONSTRAINT minlength_keycloak_id CHECK (char_length(keycloak_id) >= 1),
     pronoun varchar(32),
     title varchar(256),
     first_name varchar(256),
@@ -1416,6 +1417,7 @@ CREATE TABLE user_t (
 
 
 comment on column user_t.saml_id is 'unique-key from IdP for SAML login';
+comment on column user_t.keycloak_id is 'unique-key from Keycloak for OIDC login (sub claim)';
 comment on column user_t.organization_management_level is 'Hierarchical permission level for the whole organization.';
 
 
diff --git a/models.yml b/models.yml
index 23cbefd1..53473675 100644
--- a/models.yml
+++ b/models.yml
@@ -4407,6 +4407,11 @@ user:
     minLength: 1
     restriction_mode: B
     description: unique-key from IdP for SAML login
+  keycloak_id:
+    type: string
+    minLength: 1
+    restriction_mode: B
+    description: unique-key from Keycloak for OIDC login (sub claim)
   pronoun:
     type: string
     maxLength: 32