diff --git a/.gitignore b/.gitignore
index 9314b0d..f4d0cdf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@
 /futures-sink-0.3.17.crate
 /futures-sink-0.3.18.crate
 /futures-sink-0.3.19.crate
+/futures-sink-0.3.21.crate
diff --git a/rust-futures-sink.spec b/rust-futures-sink.spec
index 56eb6ef..0943bd7 100644
--- a/rust-futures-sink.spec
+++ b/rust-futures-sink.spec
@@ -5,7 +5,7 @@
 %global crate futures-sink
 
 Name:           rust-%{crate}
-Version:        0.3.19
+Version:        0.3.21
 Release:        %autorelease
 Summary:        Asynchronous Sink trait for the futures-rs library
 
diff --git a/sources b/sources
index db42d4e..e8ae80b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (futures-sink-0.3.19.crate) = 50c015e39c5f2580f48af42aedbbdae048363d5ca3d8e7aa3f8752219fe54862de6134c44c1355369018b7ab5ff169bee27b177f2656d4ce65fd9a42b02355d2
+SHA512 (futures-sink-0.3.21.crate) = 9bc0198495b5a1b3ed25fcf7b053a235bba0a43a4226bf085d9027537a57add1686ef61179bf2a2d4189945cb5a05a8d64ba6e6e647c56245666d51e138d113f