diff --git a/spake2/Cargo.toml b/spake2/Cargo.toml
index a0ed4f8..3d930be 100644
--- a/spake2/Cargo.toml
+++ b/spake2/Cargo.toml
@@ -26,7 +26,7 @@ is-it-maintained-issue-resolution = { repository = "RustCrypto/PAKEs" }
 is-it-maintained-open-issues = { repository = "RustCrypto/PAKEs" }
 
 [dependencies]
-curve25519-dalek = "1"
+curve25519-dalek = "1.2"
 rand = "0.6"
 sha2 = "0.8"
 hkdf = "0.8"