diff --git a/.gitmodules b/.gitmodules
index 265f2845..5470f6bd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,6 @@
 [submodule "deps/date"]
 	path = deps/date
 	url = https://github.com/HowardHinnant/date.git
+[submodule "deps/jsoncons"]
+	path = deps/jsoncons
+	url = https://github.com/danielaparker/jsoncons.git
diff --git a/deps/jsoncons b/deps/jsoncons
new file mode 160000
index 00000000..64b9da1e
--- /dev/null
+++ b/deps/jsoncons
@@ -0,0 +1 @@
+Subproject commit 64b9da1e9f15eeff4ec9d6bc856538db542118f2