Index: /issm/trunk-jpl/jenkins/aws-amazon_linux-solid_earth
===================================================================
--- /issm/trunk-jpl/jenkins/aws-amazon_linux-solid_earth	(revision 25764)
+++ /issm/trunk-jpl/jenkins/aws-amazon_linux-solid_earth	(revision 25765)
@@ -33,5 +33,5 @@
 	autotools		install-debian-linux.sh
 	cmake			install.sh
-	petsc			install-3.14-linux.sh
+	petsc			install-3.12-linux.sh
 	triangle		install-linux.sh
 	chaco			install.sh
Index: /issm/trunk-jpl/jenkins/debian_linux-valgrind
===================================================================
--- /issm/trunk-jpl/jenkins/debian_linux-valgrind	(revision 25764)
+++ /issm/trunk-jpl/jenkins/debian_linux-valgrind	(revision 25765)
@@ -42,5 +42,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	gsl			install.sh
 	boost		install-1.7-linux-valgrind.sh
Index: /issm/trunk-jpl/jenkins/mac-valgrind
===================================================================
--- /issm/trunk-jpl/jenkins/mac-valgrind	(revision 25764)
+++ /issm/trunk-jpl/jenkins/mac-valgrind	(revision 25765)
@@ -6,5 +6,5 @@
 #--------------------#
 
-MATLAB_PATH="/Applications/MATLAB_R2018a.app"
+MATLAB_PATH="/Applications/MATLAB_R2019b.app"
 
 ISSM_CONFIG='\
@@ -42,5 +42,5 @@
 	autotools	install.sh
 	cmake		install.sh
-	petsc		install-3.14-mac.sh
+	petsc		install-3.12-mac.sh
 	gsl			install.sh
 	boost		install-1.7-mac.sh
Index: /issm/trunk-jpl/jenkins/macosx_pine-island_examples
===================================================================
--- /issm/trunk-jpl/jenkins/macosx_pine-island_examples	(revision 25764)
+++ /issm/trunk-jpl/jenkins/macosx_pine-island_examples	(revision 25765)
@@ -37,5 +37,5 @@
 	autotools	install.sh
 	cmake		install.sh
-	petsc		install-3.14-mac.sh
+	petsc		install-3.12-mac.sh
 	triangle	install-mac.sh
 	chaco		install.sh
Index: /issm/trunk-jpl/jenkins/pine_island-mac
===================================================================
--- /issm/trunk-jpl/jenkins/pine_island-mac	(revision 25764)
+++ /issm/trunk-jpl/jenkins/pine_island-mac	(revision 25765)
@@ -3,5 +3,5 @@
 #--------------------#
 
-MATLAB_PATH="/Applications/MATLAB_R2018a.app"
+MATLAB_PATH="/Applications/MATLAB_R2019b.app"
 
 ISSM_CONFIG='\
Index: /issm/trunk-jpl/jenkins/ross-debian_linux
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux	(revision 25765)
@@ -32,5 +32,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	triangle	install-linux.sh
 	chaco		install.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-adolc-ampioff
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-adolc-ampioff	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-adolc-ampioff	(revision 25765)
@@ -40,5 +40,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	gsl			install.sh
 	triangle	install-linux.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-adolc-ampion
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-adolc-ampion	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-adolc-ampion	(revision 25765)
@@ -41,5 +41,5 @@
 	autotools		install-debian-linux.sh
 	cmake			install.sh
-	petsc			install-3.14-linux.sh
+	petsc			install-3.12-linux.sh
 	gsl				install.sh
 	triangle		install-linux.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-binaries
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-binaries	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-binaries	(revision 25765)
@@ -40,5 +40,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux-static.sh
+	petsc		install-3.12-linux-static.sh
 	triangle	install-linux-static.sh
 	chaco		install.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-binaries-solid_earth
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-binaries-solid_earth	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-binaries-solid_earth	(revision 25765)
@@ -42,5 +42,5 @@
 	autotools		install-debian-linux.sh
 	cmake			install.sh
-	petsc			install-3.14-linux-static.sh
+	petsc			install-3.12-linux-static.sh
 	boost			install-1.7-linux-static.sh
 	triangle		install-linux-static.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-binaries-with_dakota
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-binaries-with_dakota	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-binaries-with_dakota	(revision 25765)
@@ -47,5 +47,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux-static.sh
+	petsc		install-3.12-linux-static.sh
 	gsl			install-static.sh
 	boost		install-1.7-linux-static.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-codipack
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-codipack	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-codipack	(revision 25765)
@@ -38,5 +38,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	gsl			install.sh
 	triangle	install-linux.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-dakota
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-dakota	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-dakota	(revision 25765)
@@ -41,5 +41,5 @@
 	autotools		install-debian-linux.sh
 	cmake			install.sh
-	petsc			install-3.14-linux.sh
+	petsc			install-3.12-linux.sh
 	gsl				install.sh
 	boost			install-1.7-linux.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-gia
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-gia	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-gia	(revision 25765)
@@ -33,5 +33,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	triangle	install-linux.sh
 	math77		install.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-iceocean
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-iceocean	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-iceocean	(revision 25765)
@@ -33,5 +33,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	triangle	install-linux.sh
 	chaco		install.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-python
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-python	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-python	(revision 25765)
@@ -36,5 +36,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	gsl			install.sh
 	boost		install-1.7-linux.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-solid_earth
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-solid_earth	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-solid_earth	(revision 25765)
@@ -39,5 +39,5 @@
 	autotools		install-debian-linux.sh
 	cmake			install.sh
-	petsc			install-3.14-linux.sh
+	petsc			install-3.12-linux.sh
 	gsl				install.sh
 	boost			install-1.7-linux.sh
Index: /issm/trunk-jpl/jenkins/ross-debian_linux-trunk
===================================================================
--- /issm/trunk-jpl/jenkins/ross-debian_linux-trunk	(revision 25764)
+++ /issm/trunk-jpl/jenkins/ross-debian_linux-trunk	(revision 25765)
@@ -32,5 +32,5 @@
 	autotools	install-debian-linux.sh
 	cmake		install.sh
-	petsc		install-3.14-linux.sh
+	petsc		install-3.12-linux.sh
 	triangle	install-linux.sh
 	chaco		install.sh
Index: /issm/trunk-jpl/jenkins/windows
===================================================================
--- /issm/trunk-jpl/jenkins/windows	(revision 25764)
+++ /issm/trunk-jpl/jenkins/windows	(revision 25765)
@@ -38,9 +38,11 @@
 
 #List of external pakages to be installed and their installation scripts
-EXTERNALPACKAGES="autotools   install-win.sh
-						petsc       install-3.6-win10.sh
-						metis       install-4.0-win10.sh
-						triangle    install-windows-static.sh
-						shell2junit install.sh"
+EXTERNALPACKAGES="
+	autotools   install-win.sh
+	petsc       install-3.6-win10.sh
+	metis       install-4.0-win10.sh
+	triangle    install-windows-static.sh
+	shell2junit install.sh
+"
 
 #-----------------#