diff --git a/Cargo.lock b/Cargo.lock
index fa68713ccb..97dde00a49 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -29,12 +29,6 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
-[[package]]
-name = "base64"
-version = "0.21.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d297deb1925b89f2ccc13d7635fa0714f12c87adce1c75356b39ca9b7178567"
-
 [[package]]
 name = "base64"
 version = "0.22.1"
@@ -147,7 +141,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b3314d5adb5d94bcdf56771f2e50dbbc80bb4bdf88967526706205ac9eff24eb"
 dependencies = [
- "base64 0.22.1",
+ "base64",
  "bytes",
  "headers-core",
  "http",
@@ -517,7 +511,7 @@ name = "synapse"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "base64 0.21.7",
+ "base64",
  "blake2",
  "bytes",
  "headers",