diff --git a/.gitignore b/.gitignore
index e4e60e5..b7198cf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,4 @@
 /once_cell-1.8.0.crate
 /once_cell-1.9.0.crate
 /once_cell-1.10.0.crate
+/once_cell-1.12.0.crate
diff --git a/rust-once_cell.spec b/rust-once_cell.spec
index 2c4bd16..54f71a1 100644
--- a/rust-once_cell.spec
+++ b/rust-once_cell.spec
@@ -5,7 +5,7 @@
 %global crate once_cell
 
 Name:           rust-%{crate}
-Version:        1.10.0
+Version:        1.12.0
 Release:        %autorelease
 Summary:        Single assignment cells and lazy values
 
diff --git a/sources b/sources
index f1336f7..a08dab2 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (once_cell-1.10.0.crate) = f6b5ce5e68923296d2041f83ac037f10ad7b9e94fc607c71332e8ee942a02c29534c2073cecdb132c7e1d91428e9d9687fbf05393ca0abbf7e15db50bb3b74ab
+SHA512 (once_cell-1.12.0.crate) = 02da0e6eccee2d5246fff5e6323bd7eff0f4641801be5e5910763929a5e9d8b62c07f81001c405cc6aff03f68a14ed5bfebd9900bbdd09568bd1ab9ca9b73093