diff --git a/materialize-submodules.sh b/materialize-submodules.sh
new file mode 100644
index 000000000..3bf0b7a84
--- /dev/null
+++ b/materialize-submodules.sh
@@ -0,0 +1,37 @@
+git rm .gitmodules
+git rm --cached external/jsmn external/libbase58 external/libsodium external/libbacktrace external/libwally-core
+rm -rf external/jsmn external/libbase58 external/libsodium external/libbacktrace external/libwally-core
+
+rm -rf .git/modules/external/jsmn .git/modules/external/libbase58 .git/modules/external/libsodium .git/modules/external/libbacktrace .git/modules/external/libwally-core
+
+git commit -am "scripted: Remove submodules for materialization"
+
+git clone --recursive https://github.com/zserge/jsmn external/jsmn
+(cd external/jsmn; git checkout 6784c826d9674915a4d89649c6288e6aecb4110d)
+
+git clone --recursive https://github.com/bitcoin/libbase58.git external/libbase58
+(cd external/libbase58; git checkout 16c2527608053d2cc2fa05b2e3b5ae96065d1410)
+
+git clone --recursive https://github.com/jedisct1/libsodium.git external/libsodium
+(cd external/libsodium; git checkout 675149b9b8b66ff44152553fb3ebf9858128363d)
+
+git clone --recursive https://github.com/ianlancetaylor/libbacktrace.git external/libbacktrace
+(cd external/libbacktrace; git checkout 5a99ff7fed66b8ea8f09c9805c138524a7035ece)
+
+git clone --recursive https://github.com/ElementsProject/libwally-core.git external/libwally-core
+(cd external/libwally-core; git checkout d8e389e840df4ed0dbd68201852c8bccd38564d8)
+
+rm -rf external/jsmn/.git external/libbase58/.git/ external/libsodium/.git/ external/libbacktrace/.git/ external/libwally-core/.git
+
+# Move gitignore out of the way so the following adds work
+mv .gitignore .gitignore.bak
+
+git add external/jsmn
+git add external/libbase58
+git add external/libsodium
+git add external/libbacktrace
+git add external/libwally-core
+
+mv .gitignore.bak .gitignore
+
+git commit -am "scripted: Materialize submodules"