diff --git a/Makefile b/Makefile
index 614a6e8..cf1b190 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,9 @@
 
 all: compile
 
+deps:
+	@rebar3 get-deps
+
 compile:
 	@rebar3 compile
 
diff --git a/rebar.config b/rebar.config
index aa295b6..cb7acdb 100644
--- a/rebar.config
+++ b/rebar.config
@@ -21,7 +21,7 @@
 
 {cover_opts, [verbose]}.
 
-{deps, [{jiffy, "0.15.2"}]}.
+{deps, [{jiffy, "1.0.4"}]}.
 
 {dialyzer, [
     {warnings, [no_return, error_handling]},
diff --git a/rebar.lock b/rebar.lock
index a69d16d..66a7111 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -1,4 +1,6 @@
-[{<<"jiffy">>,
-  {git,"https://github.com/davisp/jiffy.git",
-       {ref,"06aaf440e091c9fd5f8aea557ac760a33bd37130"}},
-  0}].
+{"1.1.0",
+[{<<"jiffy">>,{pkg,<<"jiffy">>,<<"1.0.4">>},0}]}.
+[
+{pkg_hash,[
+ {<<"jiffy">>, <<"72ADEFF75C52A2FF07DE738F0813768ABE7CE158026CC1115A170340259C0CAA">>}]}
+].