diff --git a/.gitmodules b/.gitmodules
index 1f290defc..53de20117 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,21 +1,21 @@
 [submodule "Examples/src/LinearAlgebra/CppNumericalSolvers"]
 	path = Examples/src/LinearAlgebra/CppNumericalSolvers
-	url = git@github.com:lformaggia/CppNumericalSolvers.git
+	url = git@github.com:pacs-course/CppNumericalSolvers.git
 [submodule "Examples/src/LinearAlgebra/spectra"]
 	path = Examples/src/LinearAlgebra/spectra
-	url = git@github.com:lformaggia/spectra.git
+	url = git@github.com:pacs-course/spectra.git
 [submodule "Examples/src/LinearAlgebra/redsvd-h"]
 	path = Examples/src/LinearAlgebra/redsvd-h
-	url = git@github.com:lformaggia/redsvd-h.git
+	url = git@github.com:pacs-course/redsvd-h.git
 [submodule "Extras/muparser"]
 	path = Extras/muparser
-	url = git@github.com:lformaggia/muparser.git
+	url = git@github.com:pacs-course/muparser.git
 [submodule "Extras/muparserx"]
 	path = Extras/muparserx
-	url = git@github.com:lformaggia/muparserx.git
+	url = git@github.com:pacs-course/muparserx.git
 [submodule "Extras/json"]
 	path = Extras/json
-	url = git@github.com:lformaggia/json.git
+	url = git@github.com:pacs-course/json.git
 	branch = PACS
 [submodule "Extras/pybind11"]
 	path = Extras/pybind11
@@ -23,3 +23,17 @@
 [submodule "Examples/src/pybind11/pybind11_examples"]
 	path = Examples/src/pybind11/pybind11_examples
 	url = git@github.com:pacs-course/pybind11_examples.git
+[submodule "json"]
+	branch = PACS
+[submodule "muparser"]
+	branch = master
+[submodule "muparserx"]
+	branch = master
+[submodule "spectra"]
+	branch = master
+[submodule "redsvd-h"]
+	branch = master
+[submodule "CppNumericalSolvers/"]
+	branch = master
+[submodule "pybind11"]
+	branch = master
diff --git a/Extras/json b/Extras/json
index 37603b288..18c960303 160000
--- a/Extras/json
+++ b/Extras/json
@@ -1 +1 @@
-Subproject commit 37603b2884c3ab20aa216d896ef65ffbf2a396d4
+Subproject commit 18c9603032a781b06dd3418ec13a7111c910bc76
diff --git a/Extras/muparserx b/Extras/muparserx
index 135584b5b..aa5f6a958 160000
--- a/Extras/muparserx
+++ b/Extras/muparserx
@@ -1 +1 @@
-Subproject commit 135584b5beca26cbc85412fa1a00b520619e52ad
+Subproject commit aa5f6a9581bd48c8b4a83bc022cf8da93979333e
diff --git a/Extras/pybind11 b/Extras/pybind11
index 277f3b0c7..db9bd88bb 160000
--- a/Extras/pybind11
+++ b/Extras/pybind11
@@ -1 +1 @@
-Subproject commit 277f3b0c71b435e3f02c5352f089c9fb9bf7fa9e
+Subproject commit db9bd88bb94263ebc817443e9d9d06824391dc4a
diff --git a/change_submodules_url_https.sh b/change_submodules_url_https.sh
index 67b415ed3..1b3c4afbe 100755
--- a/change_submodules_url_https.sh
+++ b/change_submodules_url_https.sh
@@ -1,9 +1,9 @@
-git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/CppNumericalSolvers.url https://github.com/lformaggia/CppNumericalSolvers.git
-git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/spectra.url https://github.com/lformaggia/spectra.git
-git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/redsvd-h.url https://github.com/lformaggia/redsvd-h.git
-git config --file=.gitmodules submodule.Extras/muparser.url https://github.com/lformaggia/muparser.git
-git config --file=.gitmodules submodule.Extras/muparserx.url https://github.com/lformaggia/muparserx.git
-git config --file=.gitmodules submodule.Extras/json.url https://github.com/lformaggia/json.git
+git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/CppNumericalSolvers.url https://github.com/pacs-course/CppNumericalSolvers.git
+git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/spectra.url https://github.com/pacs-course/spectra.git
+git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/redsvd-h.url https://github.com/pacs-course/redsvd-h.git
+git config --file=.gitmodules submodule.Extras/muparser.url https://github.com/pacs-course/muparser.git
+git config --file=.gitmodules submodule.Extras/muparserx.url https://github.com/pacs-course/muparserx.git
+git config --file=.gitmodules submodule.Extras/json.url https://github.com/pacs-course/json.git
 git submodule sync
 git submodule update --recursive --remote
 
diff --git a/change_submodules_url_ssh.sh b/change_submodules_url_ssh.sh
index 9b76dae3e..0eb82ae5f 100755
--- a/change_submodules_url_ssh.sh
+++ b/change_submodules_url_ssh.sh
@@ -1,9 +1,9 @@
-git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/CppNumericalSolvers.url git@github.com:lformaggia/CppNumericalSolvers.git
-git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/spectra.url git@github.com:lformaggia/spectra.git
-git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/redsvd-h.url git@github.com:lformaggia/redsvd-h.git
-git config --file=.gitmodules submodule.Extras/muparser.url git@github.com:lformaggia/muparser.git
-git config --file=.gitmodules submodule.Extras/muparserx.url git@github.com:lformaggia/muparserx.git
-git config --file=.gitmodules submodule.Extras/json.url git@github.com:lformaggia/json.git
+git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/CppNumericalSolvers.url git@github.com:pacs-course/CppNumericalSolvers.git
+git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/spectra.url git@github.com:pacs-course/spectra.git
+git config --file=.gitmodules submodule.Examples/src/LinearAlgebra/redsvd-h.url git@github.com:pacs-course/redsvd-h.git
+git config --file=.gitmodules submodule.Extras/muparser.url git@github.com:pacs-course/muparser.git
+git config --file=.gitmodules submodule.Extras/muparserx.url git@github.com:pacs-course/muparserx.git
+git config --file=.gitmodules submodule.Extras/json.url git@github.com:pacs-course/json.git
 git submodule sync
 git submodule update --recursive --remote