diff --git a/.gitmodules b/.gitmodules
index 09a2175..f795d83 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -25,3 +25,9 @@
 [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
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
index 0481a1f..53c21c2 160000
--- a/lib/ffmpeg
+++ b/lib/ffmpeg
@@ -1 +1 @@
-Subproject commit 0481a1f6e5b8737c4fbc67794fd3a24cfcf34594
+Subproject commit 53c21c2d6bebba887be9a30de204875fb41b1169
diff --git a/lib/harfbuzz b/lib/harfbuzz
index 7cde68f..878e358 160000
--- a/lib/harfbuzz
+++ b/lib/harfbuzz
@@ -1 +1 @@
-Subproject commit 7cde68f10cdf2c3ff77c1d9077475c0fc034c75c
+Subproject commit 878e3588a3349c2660b0f9aa6d94a994034d7c10
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/mupdf b/lib/mupdf
index 91782a4..355ceda 160000
--- a/lib/mupdf
+++ b/lib/mupdf
@@ -1 +1 @@
-Subproject commit 91782a434877d84b828fdeef20c569d4c3b4071b
+Subproject commit 355cedaefe68358ad533ffb6a59bbb4e6444267a
diff --git a/scripts/get_static_libs.sh b/scripts/get_static_libs.sh
index 2941750..957636d 100755
--- a/scripts/get_static_libs.sh
+++ b/scripts/get_static_libs.sh
@@ -54,14 +54,12 @@ cd ../..
 mv onion/build/src/onion/libonion_static.a .
 
 #bzip2
-git clone https://github.com/enthought/bzip2-1.0.6
 cd bzip2-1.0.6
 make -j 4
 cd ..
 mv bzip2-1.0.6/libbz2.a .
 
 # magic
-git clone https://github.com/threatstack/libmagic
 cd libmagic
 ./autogen.sh
 ./configure --enable-static --disable-shared
diff --git a/scripts/get_static_libs_freebsd.sh b/scripts/get_static_libs_freebsd.sh
index eb9c4d2..83f236e 100755
--- a/scripts/get_static_libs_freebsd.sh
+++ b/scripts/get_static_libs_freebsd.sh
@@ -42,14 +42,12 @@ mv ffmpeg/libswresample/libswresample.a .
 mv ffmpeg/libswscale/libswscale.a .
 
 #bzip2
-git clone https://github.com/enthought/bzip2-1.0.6
 cd bzip2-1.0.6
 make -j 4
 cd ..
 mv bzip2-1.0.6/libbz2.a .
 
 # magic
-git clone https://github.com/threatstack/libmagic
 cd libmagic
 ./autogen.sh
 ./configure --enable-static --disable-shared