diff --git a/.gitignore b/.gitignore
index 099a4c3..8bb249b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@
 /futures-io-0.3.17.crate
 /futures-io-0.3.18.crate
 /futures-io-0.3.19.crate
+/futures-io-0.3.21.crate
diff --git a/rust-futures-io.spec b/rust-futures-io.spec
index 29addc4..c3f2fb4 100644
--- a/rust-futures-io.spec
+++ b/rust-futures-io.spec
@@ -5,7 +5,7 @@
 %global crate futures-io
 
 Name:           rust-%{crate}
-Version:        0.3.19
+Version:        0.3.21
 Release:        %autorelease
 Summary:        AsyncRead, AsyncWrite, AsyncSeek, and AsyncBufRead traits
 
diff --git a/sources b/sources
index 99bc200..699113e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (futures-io-0.3.19.crate) = 8bddbfabe1e6e09f067058db9117782703626e989e14c7e13d2d0f828fbd8de141b11d8b209d4e5dc5f8ff956ccce2cab958a438d5466ed20e41a3e1d50a7c30
+SHA512 (futures-io-0.3.21.crate) = dde0b79c4ba208b4c92c699457efbd515d331ab612e7b7df735b3b8f2ab79c012b1ba329ddaf488d68c69dbd119aa231b833b81cbcc0cc2f55c656f68dc22bd8