diff --git a/rebar.config b/rebar.config
index 686c5cb9791..a4701007c08 100644
--- a/rebar.config
+++ b/rebar.config
@@ -23,6 +23,7 @@
 %%%
 
 {deps, [{base64url, ".*", {git, "https://github.com/dvv/base64url", {tag, "1.0.1"}}},
+        {decimal, ".*", {git, "https://github.com/ericmj/decimal", {branch, "main"}}},
         {cache_tab, ".*", {git, "https://github.com/processone/cache_tab", {tag, "1.0.30"}}},
         {eimp, ".*", {git, "https://github.com/processone/eimp", {tag, "1.0.22"}}},
         {if_var_true, tools,