diff --git a/.gitmodules b/.gitmodules
index e52bb45bb..2ea4a31da 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,9 @@
 [submodule "submodules/belr"]
 	path = submodules/belr
 	url = git://git.linphone.org/belr.git
+[submodule "submodules/externals/libmatroska-c"]
+	path = submodules/externals/libmatroska-c
+	url = git://git.linphone.org/libmatroska-c.git
+[submodule "submodules/bctoolbox"]
+	path = submodules/bctoolbox
+	url = git://git.linphone.org/bctoolbox.git
diff --git a/submodules/bcg729 b/submodules/bcg729
index 91d1206d6..e540e0c4d 160000
--- a/submodules/bcg729
+++ b/submodules/bcg729
@@ -1 +1 @@
-Subproject commit 91d1206d63e57a78af1d26058052e9d37f0b6f5d
+Subproject commit e540e0c4d5521c5125e1de496ad1085e642df120
diff --git a/submodules/bctoolbox b/submodules/bctoolbox
new file mode 160000
index 000000000..963d1ed90
--- /dev/null
+++ b/submodules/bctoolbox
@@ -0,0 +1 @@
+Subproject commit 963d1ed90a93546e737499d8192c859f0f6b114e
diff --git a/submodules/externals/libmatroska-c b/submodules/externals/libmatroska-c
new file mode 160000
index 000000000..c3fc2746f
--- /dev/null
+++ b/submodules/externals/libmatroska-c
@@ -0,0 +1 @@
+Subproject commit c3fc2746f18bafefe3010669d8d2855240565c86
diff --git a/submodules/msamr b/submodules/msamr
index 326e8f035..5e180193d 160000
--- a/submodules/msamr
+++ b/submodules/msamr
@@ -1 +1 @@
-Subproject commit 326e8f035d45ff96c1d0072a52c758730727852a
+Subproject commit 5e180193d06e5d6b3394571ac7750b5359856c15
diff --git a/submodules/msilbc b/submodules/msilbc
index d8114cbce..4d36bb77f 160000
--- a/submodules/msilbc
+++ b/submodules/msilbc
@@ -1 +1 @@
-Subproject commit d8114cbce20391b1222861a9276255589c4e0bb6
+Subproject commit 4d36bb77f6a7e259dc4c6f76b7aab3c65eaece96
diff --git a/submodules/msopenh264 b/submodules/msopenh264
index d2acb63cc..709e1f690 160000
--- a/submodules/msopenh264
+++ b/submodules/msopenh264
@@ -1 +1 @@
-Subproject commit d2acb63cca728f1efa4c1ffaf52ee0aee55f731f
+Subproject commit 709e1f6903914fa883ebcf26f51fece65e3e1ab5
diff --git a/submodules/mssilk b/submodules/mssilk
index 0c10e9f89..e766ae43c 160000
--- a/submodules/mssilk
+++ b/submodules/mssilk
@@ -1 +1 @@
-Subproject commit 0c10e9f890f8e24b12fff430d559de02a213b032
+Subproject commit e766ae43c503aa08080df9beb24a0fe81ce213bb
diff --git a/submodules/mswasapi b/submodules/mswasapi
index cf04af555..350f45105 160000
--- a/submodules/mswasapi
+++ b/submodules/mswasapi
@@ -1 +1 @@
-Subproject commit cf04af5559222eac11aa4f4a1979ce4ce39cca90
+Subproject commit 350f451051b7839e15c60b02830685ac3b0f9424
diff --git a/submodules/mswebrtc b/submodules/mswebrtc
index 27680f2d9..113e98188 160000
--- a/submodules/mswebrtc
+++ b/submodules/mswebrtc
@@ -1 +1 @@
-Subproject commit 27680f2d99e6f431d8fcc433c4120ddf48263578
+Subproject commit 113e9818866ebbf75a03d4559d76ee89a6dcfd9f
diff --git a/submodules/msx264 b/submodules/msx264
index 0831ca99e..427e20aea 160000
--- a/submodules/msx264
+++ b/submodules/msx264
@@ -1 +1 @@
-Subproject commit 0831ca99e4aed1d98c0766d14b206742030cdf6d
+Subproject commit 427e20aeabcf62fbd2fdb48ab80f56833d3db790