diff --git a/glicid/packages/openldap.scm b/glicid/packages/openldap.scm
index 322bb7d..37777ef 100644
--- a/glicid/packages/openldap.scm
+++ b/glicid/packages/openldap.scm
@@ -19,6 +19,7 @@
                #:use-module (gnu packages perl)
                #:use-module (gnu packages python)
                #:use-module (gnu packages pkg-config)
+               #:use-module (gnu packages crypto)
                #:use-module (gnu packages tls))
 
 (define-public openldap