diff --git a/Cargo.lock b/Cargo.lock
index 155eb16..0f3ce1f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -631,9 +631,9 @@ dependencies = [
 
 [[package]]
 name = "siphasher"
-version = "0.3.10"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bd3e3206899af3f8b12af284fafc038cc1dc2b41d1b89dd17297221c5d225de"
+checksum = "54ac45299ccbd390721be55b412d41931911f654fa99e2cb8bfb57184b2061fe"
 
 [[package]]
 name = "subtle"
diff --git a/mc-oblivious-map/Cargo.toml b/mc-oblivious-map/Cargo.toml
index df8ecdd..903ebd1 100644
--- a/mc-oblivious-map/Cargo.toml
+++ b/mc-oblivious-map/Cargo.toml
@@ -21,7 +21,7 @@ mc-oblivious-traits = { path = "../mc-oblivious-traits", version = "2.3" }
 #third party
 generic-array = { version = "0.14", default-features = false }
 rand_core = { version = "0.6", default-features = false }
-siphasher = "0.3"
+siphasher = "1.0"
 
 [dev-dependencies]
 criterion = { version = "0.5", features = ["html_reports"] }