diff --git a/cfg/dev.yaml b/cfg/dev.yaml
index 3efeadc1f..f4320960a 100644
--- a/cfg/dev.yaml
+++ b/cfg/dev.yaml
@@ -1,4 +1,6 @@
 probod:
+  auth:
+    invitation-confirmation-token-validity: 3600
   api:
     cors:
       allowed-origins: ["http://localhost:8080", "http://localhost:5173"]
diff --git a/pkg/probod/auth_config.go b/pkg/probod/auth_config.go
index fc04f3182..a66ccea67 100644
--- a/pkg/probod/auth_config.go
+++ b/pkg/probod/auth_config.go
@@ -21,9 +21,10 @@ import (
 
 type (
 	authConfig struct {
-		Cookie        cookieConfig   `json:"cookie"`
-		Password      passwordConfig `json:"password"`
-		DisableSignup bool           `json:"disable-signup"`
+		Cookie                              cookieConfig   `json:"cookie"`
+		Password                            passwordConfig `json:"password"`
+		DisableSignup                       bool           `json:"disable-signup"`
+		InvitationConfirmationTokenValidity int            `json:"invitation-confirmation-token-validity"`
 	}
 
 	trustAuthConfig struct {
diff --git a/pkg/probod/probod.go b/pkg/probod/probod.go
index b74c84c7c..ab792551f 100644
--- a/pkg/probod/probod.go
+++ b/pkg/probod/probod.go
@@ -99,7 +99,8 @@ func New() *Implm {
 					Duration: 24,
 					Domain:   "localhost",
 				},
-				DisableSignup: false,
+				DisableSignup:                       false,
+				InvitationConfirmationTokenValidity: 3600,
 			},
 			TrustAuth: trustAuthConfig{
 				CookieName:        "TCT",
@@ -235,6 +236,7 @@ func (impl *Implm) Run(
 		impl.cfg.Auth.Cookie.Secret,
 		impl.cfg.Hostname,
 		impl.cfg.Auth.DisableSignup,
+		time.Duration(impl.cfg.Auth.InvitationConfirmationTokenValidity)*time.Second,
 	)
 	if err != nil {
 		return fmt.Errorf("cannot create usrmgr service: %w", err)
diff --git a/pkg/usrmgr/usrmgr.go b/pkg/usrmgr/usrmgr.go
index 593aa3c7f..07bce1443 100644
--- a/pkg/usrmgr/usrmgr.go
+++ b/pkg/usrmgr/usrmgr.go
@@ -32,11 +32,12 @@ import (
 
 type (
 	Service struct {
-		pg            *pg.Client
-		hp            *passwdhash.Profile
-		hostname      string
-		tokenSecret   string
-		disableSignup bool
+		pg                      *pg.Client
+		hp                      *passwdhash.Profile
+		hostname                string
+		tokenSecret             string
+		disableSignup           bool
+		invitationTokenValidity time.Duration
 	}
 
 	ErrInvalidCredentials struct {
@@ -168,13 +169,15 @@ func NewService(
 	tokenSecret string,
 	hostname string,
 	disableSignup bool,
+	invitationTokenValidity time.Duration,
 ) (*Service, error) {
 	return &Service{
-		pg:            pgClient,
-		hp:            hp,
-		hostname:      hostname,
-		tokenSecret:   tokenSecret,
-		disableSignup: disableSignup,
+		pg:                      pgClient,
+		hp:                      hp,
+		hostname:                hostname,
+		tokenSecret:             tokenSecret,
+		disableSignup:           disableSignup,
+		invitationTokenValidity: invitationTokenValidity,
 	}, nil
 }
 
@@ -710,7 +713,7 @@ func (s Service) InviteUser(
 	confirmationToken, err := statelesstoken.NewToken(
 		s.tokenSecret,
 		TokenTypeOrganizationInvitation,
-		12*time.Hour,
+		s.invitationTokenValidity,
 		InvitationData{OrganizationID: organizationID, Email: emailAddress, FullName: fullName},
 	)
 	if err != nil {