diff --git a/.gitignore b/.gitignore
index ac740bb..42a7106 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 /nix-0.19.1.crate
 /nix-0.20.0.crate
 /nix-0.22.0.crate
+/nix-0.22.1.crate
diff --git a/nix-fix-metadata.diff b/nix-fix-metadata.diff
index 62b5de7..02bf515 100644
--- a/nix-fix-metadata.diff
+++ b/nix-fix-metadata.diff
@@ -1,6 +1,15 @@
---- nix-0.22.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ nix-0.22.0/Cargo.toml	2021-07-29T11:04:40.286153+00:00
-@@ -74,7 +74,3 @@
+--- nix-0.22.1/Cargo.toml	1970-01-01T00:00:01+00:00
++++ nix-0.22.1/Cargo.toml	2021-08-21T09:57:51.652654+00:00
+@@ -47,7 +47,7 @@
+ name = "test-ptymaster-drop"
+ path = "test/test_ptymaster_drop.rs"
+ [dependencies.bitflags]
+-version = ">= 1.1.0, < 1.3.0"
++version = "1.1.0"
+ 
+ [dependencies.cfg-if]
+ version = "1.0"
+@@ -73,7 +73,3 @@
  version = "0.5.1"
  [target."cfg(not(target_os = \"redox\"))".dependencies.memoffset]
  version = "0.6.3"
diff --git a/rust-nix.spec b/rust-nix.spec
index 327f6c6..741a5e8 100644
--- a/rust-nix.spec
+++ b/rust-nix.spec
@@ -5,7 +5,7 @@
 %global crate nix
 
 Name:           rust-%{crate}
-Version:        0.22.0
+Version:        0.22.1
 Release:        %autorelease
 Summary:        Rust friendly bindings to *nix APIs
 
@@ -14,6 +14,7 @@ License:        MIT
 URL:            https://crates.io/crates/nix
 Source:         %{crates_source}
 # Initial patched metadata
+# * relax bitflags dependency (compatibility with Rust < 1.46 is not required)
 # * drop DragonflyBSD/FreeBSD-specific dependencies
 Patch0:         nix-fix-metadata.diff
 
diff --git a/sources b/sources
index cc58301..837302f 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (nix-0.22.0.crate) = 73e18e87814dc98bb77f99705c45537afeadb04790c3db54a55688b3e925d3df5e7911282e997244316e310d5286ac10880b00487f706f9c7babde9225a4a14f
+SHA512 (nix-0.22.1.crate) = abed04c906173956a706ca5906c666336bc5730895aec25a7eed33dd0e6d49be499483242577637f72f86b852dd616b019a14931a7568cb72f165acd0e41901d