diff --git a/rebar.config b/rebar.config
index 83b67c8b7..ffb2a94bd 100644
--- a/rebar.config
+++ b/rebar.config
@@ -28,7 +28,7 @@
         {fast_yaml, ".*", {git, "https://github.com/processone/fast_yaml", {tag, "1.0.18"}}},
         {jiffy, ".*", {git, "https://github.com/davisp/jiffy", {tag, "0.14.8"}}},
         {p1_oauth2, ".*", {git, "https://github.com/processone/p1_oauth2", {tag, "0.6.4"}}},
-        {pkix, ".*", {git, "https://github.com/processone/pkix", {tag, "1.0.1"}}},
+        {pkix, ".*", {git, "https://github.com/processone/pkix", "a9b957d"}},
         {jose, ".*", {git, "https://github.com/potatosalad/erlang-jose", {tag, "1.8.4"}}},
         {eimp, ".*", {git, "https://github.com/processone/eimp", {tag, "1.0.10"}}},
         {mqtree, ".*", {git, "https://github.com/processone/mqtree", {tag, "1.0.2"}}},