diff --git a/pyproject.toml b/pyproject.toml
index 92066efa0390197737452ec4f5a2ab6634ca1de1..66f1692bd2645517a06fa52e042d10813f4aa60a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ jsonschema = "^3.2.0"
 pypeg2 = "^2.15.2"
 attrs = "^21.2.0"
 base58 = "^2.1.0"
-libnacl = "^1.7.2"
+libnacl = "1.8.0"
 pyaes = "^1.6.1"
 mnemonic = "^0.19"