diff --git a/ethers.nimble b/ethers.nimble
index f836dbd..d6e1b4b 100644
--- a/ethers.nimble
+++ b/ethers.nimble
@@ -5,7 +5,7 @@ license = "MIT"
 
 requires "nim >= 1.6.0"
 requires "chronos >= 3.0.0 & < 4.0.0"
-requires "contractabi >= 0.4.6 & < 0.5.0"
+requires "contractabi >= 0.5.0 & < 0.6.0"
 requires "questionable >= 0.10.2 & < 0.11.0"
 requires "upraises >= 0.1.0 & < 0.2.0"
 requires "json_rpc"