diff --git a/.gitmodules b/.gitmodules
index 50fa791..06a003c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "lib/system"]
 	path = lib/system
 	url = https://github.com/thunderbrewhq/system.git
+[submodule "lib/bc"]
+	path = lib/bc
+	url = https://github.com/thunderbrewhq/bc.git
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index aef77c8..3564434 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -30,6 +30,7 @@ target_include_directories(common
 target_link_libraries(common
     PUBLIC
         expat-2.0
+        bc
         storm
         tempest
 )
diff --git a/lib/bc b/lib/bc
new file mode 160000
index 0000000..2950427
--- /dev/null
+++ b/lib/bc
@@ -0,0 +1 @@
+Subproject commit 29504272e5d3e4c722c276d751a2919d7c21b662