diff --git a/.github/workflows/run_test.yml b/.github/workflows/run_test.yml
index 483167f..4dde6ed 100644
--- a/.github/workflows/run_test.yml
+++ b/.github/workflows/run_test.yml
@@ -36,7 +36,7 @@ jobs:
           octave-cli --eval "addpath(pwd);cd sample; tic; demo_vol2mesh_ex1; toc; demo_vol2mesh_ex1b; demo_vol2mesh_ex1c"
           octave-cli --eval "addpath(pwd);cd sample; tic; demo_vol2mesh_ex2; toc"
           octave-cli --eval "addpath(pwd);cd sample; tic; demo_surf2mesh_ex1; toc"
-          octave-cli --eval "addpath(pwd);cd sample; disp(graphics_toolkit); graphics_toolkit('qt'); tic; demo_directplc_ex1; toc"
+          octave-cli --eval "addpath(pwd);cd sample; tic; demo_directplc_ex1; toc"
           octave-cli --eval "addpath(pwd);cd sample; tic; demo_grayscale_ex1; toc"
           octave-cli --eval "addpath(pwd);cd sample; tic; demo_shortcut_ex1; toc"
           octave-cli --eval "addpath(pwd);cd sample; tic; demo_surf2vol_ex1; toc"
diff --git a/sample/demo_directplc_ex1.m b/sample/demo_directplc_ex1.m
index a699a5c..bbdcadf 100644
--- a/sample/demo_directplc_ex1.m
+++ b/sample/demo_directplc_ex1.m
@@ -54,7 +54,7 @@
 [node, elem, face] = surf2mesh(no, fc, min(no), max(no), 1, 50, [0 0 1], [], 0);
 
 plotmesh(no, fc, 'y>-0.1');
-figure;
+%figure;
 plotmesh(node, elem, 'x>0 | y>0');
-figure;
+%figure;
 plotmesh(node, face, 'x>0 | y>0');
diff --git a/tools/PoissonRecon b/tools/PoissonRecon
index 387fa8a..455ea0d 160000
--- a/tools/PoissonRecon
+++ b/tools/PoissonRecon
@@ -1 +1 @@
-Subproject commit 387fa8acc7871133efbe1fe20083bd57899ef018
+Subproject commit 455ea0dbe651f31bf6985ff2891becff1dd79c72
diff --git a/tools/meshfix b/tools/meshfix
index 88c19a9..6888ecb 160000
--- a/tools/meshfix
+++ b/tools/meshfix
@@ -1 +1 @@
-Subproject commit 88c19a938789780efefdf4213d626f4296dd6d88
+Subproject commit 6888ecb2d49667f7f941863935a5608da30a2774
diff --git a/tools/tetgen b/tools/tetgen
index 213548f..603ba18 160000
--- a/tools/tetgen
+++ b/tools/tetgen
@@ -1 +1 @@
-Subproject commit 213548f5bca1ec00269603703f0fec1272181587
+Subproject commit 603ba181ebfaed38eec88532720e282606009b73