diff --git a/.gitmodules b/.gitmodules
index f795d83..2ccec5e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,30 +4,39 @@
 [submodule "cJSON"]
 	path = cJSON
 	url = https://github.com/DaveGamble/cJSON
-[submodule "lib/mupdf"]
-	path = lib/mupdf
-	url = git://git.ghostscript.com/mupdf.git
-[submodule "lib/onion"]
-	path = lib/onion
-	url = https://github.com/davidmoreno/onion
-[submodule "lib/ffmpeg"]
-	path = lib/ffmpeg
-	url = https://git.ffmpeg.org/ffmpeg.git
 [submodule "lmdb"]
 	path = lmdb
 	url = https://github.com/LMDB/lmdb
 [submodule "utf8.h"]
 	path = utf8.h
 	url = https://github.com/sheredom/utf8.h
-[submodule "lib/openjpeg"]
-	path = lib/openjpeg
-	url = https://github.com/uclouvain/openjpeg
-[submodule "lib/harfbuzz"]
-	path = lib/harfbuzz
-	url = https://github.com/harfbuzz/harfbuzz
-[submodule "lib/libmagic"]
-	path = lib/libmagic
-	url = https://github.com/threatstack/libmagic
 [submodule "lib/bzip2-1.0.6"]
 	path = lib/bzip2-1.0.6
 	url = https://github.com/enthought/bzip2-1.0.6
+[submodule "lib/libmagic"]
+	path = lib/libmagic
+	url = https://github.com/threatstack/libmagic
+[submodule "lib/harfbuzz"]
+	path = lib/harfbuzz
+	url = https://github.com/harfbuzz/harfbuzz
+[submodule "lib/openjpeg"]
+	path = lib/openjpeg
+	url = https://github.com/uclouvain/openjpeg
+[submodule "lib/ffmpeg"]
+	path = lib/ffmpeg
+	url = https://git.ffmpeg.org/ffmpeg.git
+[submodule "lib/onion"]
+	path = lib/onion
+	url = https://github.com/davidmoreno/onion
+[submodule "lib/mupdf"]
+	path = lib/mupdf
+	url = git://git.ghostscript.com/mupdf.git
+[submodule "lib/zstd"]
+	path = lib/zstd
+	url = https://github.com/facebook/zstd
+[submodule "lib/lz4"]
+	path = lib/lz4
+	url = https://github.com/lz4/lz4
+[submodule "lib/libarchive"]
+	path = lib/libarchive
+	url = https://github.com/libarchive/libarchive
diff --git a/cJSON b/cJSON
index 533ff8a..2d4ad84 160000
--- a/cJSON
+++ b/cJSON
@@ -1 +1 @@
-Subproject commit 533ff8a783be0d5c81581ab17cd2aeba3f0044c1
+Subproject commit 2d4ad841927590198ecfb8b27335a0cd97cf15c1
diff --git a/lib/bzip2-1.0.6 b/lib/bzip2-1.0.6
new file mode 160000
index 0000000..288acf9
--- /dev/null
+++ b/lib/bzip2-1.0.6
@@ -0,0 +1 @@
+Subproject commit 288acf97a15d558f96c24c89f578b724d6e06b0c
diff --git a/lib/ffmpeg b/lib/ffmpeg
new file mode 160000
index 0000000..e52070e
--- /dev/null
+++ b/lib/ffmpeg
@@ -0,0 +1 @@
+Subproject commit e52070e89c755bffe08ecb9d9ea6be73ca1509cd
diff --git a/lib/harfbuzz b/lib/harfbuzz
new file mode 160000
index 0000000..34ed8e7
--- /dev/null
+++ b/lib/harfbuzz
@@ -0,0 +1 @@
+Subproject commit 34ed8e7218d9147a6ccd99198db594cf8f66f61b
diff --git a/lib/libarchive b/lib/libarchive
new file mode 160000
index 0000000..6f4fceb
--- /dev/null
+++ b/lib/libarchive
@@ -0,0 +1 @@
+Subproject commit 6f4fceb714868f2ddbccef4871acc1670e45fc03
diff --git a/lib/libmagic b/lib/libmagic
new file mode 160000
index 0000000..1249b5c
--- /dev/null
+++ b/lib/libmagic
@@ -0,0 +1 @@
+Subproject commit 1249b5cd02c3b6fb9b917d16c76bc76c862932b6
diff --git a/lib/lz4 b/lib/lz4
new file mode 160000
index 0000000..0f74983
--- /dev/null
+++ b/lib/lz4
@@ -0,0 +1 @@
+Subproject commit 0f749838bf29bc0d1df428e23cf3dbb76ec4e9fc
diff --git a/lib/mupdf b/lib/mupdf
new file mode 160000
index 0000000..c50ac19
--- /dev/null
+++ b/lib/mupdf
@@ -0,0 +1 @@
+Subproject commit c50ac19e412fe7830dfef5d1cbc71e9da3405c96
diff --git a/lib/onion b/lib/onion
new file mode 160000
index 0000000..73329b6
--- /dev/null
+++ b/lib/onion
@@ -0,0 +1 @@
+Subproject commit 73329b61eb82d65b827e92ab46b2db7da85163c7
diff --git a/lib/openjpeg b/lib/openjpeg
new file mode 160000
index 0000000..ac37373
--- /dev/null
+++ b/lib/openjpeg
@@ -0,0 +1 @@
+Subproject commit ac3737372a00b8778b528094dd5bd58a74f67d42
diff --git a/lib/zstd b/lib/zstd
new file mode 160000
index 0000000..d73e2fb
--- /dev/null
+++ b/lib/zstd
@@ -0,0 +1 @@
+Subproject commit d73e2fb465c9289f5a6871cef1fe48de917a5cc2