diff --git a/Gemfile.lock b/Gemfile.lock
index 09abbe7..3054801 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
     coffee-script-source (1.12.2)
     concurrent-ruby (1.3.5)
     connection_pool (2.5.4)
-    contracts (0.17.2)
+    contracts (0.17.3)
     dotenv (3.1.8)
     drb (2.2.3)
     em-websocket (0.5.3)
@@ -224,7 +224,7 @@ CHECKSUMS
   coffee-script-source (1.12.2) sha256=e12b16fd8927fbbf8b87cb2e9a85a6cf457c6881cc7ff8b1af15b31f70da07a4
   concurrent-ruby (1.3.5) sha256=813b3e37aca6df2a21a3b9f1d497f8cbab24a2b94cab325bffe65ee0f6cbebc6
   connection_pool (2.5.4) sha256=e9e1922327416091f3f6542f5f4446c2a20745276b9aa796dd0bb2fd0ea1e70a
-  contracts (0.17.2) sha256=3baebb3aea27537388e9f6e13d589414f0d187cda0f5924a90ca756a39dd94e9
+  contracts (0.17.3) sha256=e72e626413ea47099becb7b5683beb1c2ea902c69f5bad55c9258fe2b48314d7
   dotenv (3.1.8) sha256=9e1176060ced581f8e6ce4384e91361817763a76e3c625c8bddc18b35bd392c3
   drb (2.2.3) sha256=0b00d6fdb50995fe4a45dea13663493c841112e4068656854646f418fda13373
   em-websocket (0.5.3) sha256=f56a92bde4e6cb879256d58ee31f124181f68f8887bd14d53d5d9a292758c6a8