diff --git a/examples/plot_pitch_stability.jl b/examples/plot_pitch_stability.jl
index bd24c6e9..b3af2d17 100644
--- a/examples/plot_pitch_stability.jl
+++ b/examples/plot_pitch_stability.jl
@@ -1,7 +1,7 @@
 
 
 using Printf
-using KiteModels, StatsBase, DSP
+using KiteModels, StatsBase, LinearAlgebra, DSP
 
 if haskey(ENV, "USE_V9")
     set = deepcopy(load_settings("system_v9.yaml"))