diff --git a/DESCRIPTION b/DESCRIPTION
index dd8946a..01beac2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -4,7 +4,7 @@ Date: 2019-01-12
 Title: Functions for size spectrum calculations of fish populations and communities
 Author: Ken H. Andersen
 Maintainer: Ken H. Andersen <kha@aqua.dtu.dk>
-Depends: R (>= 3.1.0), deSolve, limSolve, reshape, latex2exp, pracma, gsl
+Depends: R (>= 3.1.0), deSolve, limSolve, reshape, latex2exp, pracma, gsl, shiny
 Suggests: shiny
 Description: Contains all necessary functions for size spectrum calculations of fish stocks: 
   growth functions, demography (population size spectrum), community structure (community size spectrum),
diff --git a/NAMESPACE b/NAMESPACE
index 2ca23af..161a8a6 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -7,7 +7,8 @@ import(
   limSolve,
   reshape,
   latex2exp,
-  gsl
+  shiny
 )
 importFrom(pracma, trapz, cumtrapz)
-importFrom("stats", "optimize", "rnorm", "time", "uniroot")
\ No newline at end of file
+importFrom("stats", "optimize", "rnorm", "time", "uniroot")
+importFrom("gsl", "lambert_W0")
\ No newline at end of file