diff --git a/CHANGELOG.md b/CHANGELOG.md
index e33f905ce..70917249b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 
 - Missing console react-pdf dependency in package.json
+- On sign out, clear cookie along with the existing session expiration
 
 ## [0.116.1] - 2026-01-18
 
diff --git a/pkg/server/api/authn/cookie.go b/pkg/server/api/authn/cookie.go
index bf4b4ff19..81f9f87de 100644
--- a/pkg/server/api/authn/cookie.go
+++ b/pkg/server/api/authn/cookie.go
@@ -34,6 +34,10 @@ func (c *Cookie) Set(w http.ResponseWriter, session *coredata.Session) {
 	)
 }
 
+func (c *Cookie) Clear(w http.ResponseWriter, session *coredata.Session) {
+	securecookie.Clear(w, c.sessionCookieConfig(time.Until(session.ExpiredAt)))
+}
+
 func NewCookie(config *securecookie.Config) *Cookie {
 	return &Cookie{config}
 }
diff --git a/pkg/server/api/connect/v1/v1_resolver.go b/pkg/server/api/connect/v1/v1_resolver.go
index 6ce6c5953..ea54624cd 100644
--- a/pkg/server/api/connect/v1/v1_resolver.go
+++ b/pkg/server/api/connect/v1/v1_resolver.go
@@ -426,6 +426,9 @@ func (r *mutationResolver) SignOut(ctx context.Context) (*types.SignOutPayload,
 		return nil, gqlutils.Internal(ctx)
 	}
 
+	w := gqlutils.HTTPResponseWriterFromContext(ctx)
+	r.sessionCookie.Clear(w, session)
+
 	return &types.SignOutPayload{Success: true}, nil
 }