diff --git a/.gitignore b/.gitignore
index 6c07bcc..405beca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 /btrd-0.5.0.crate
+/btrd-0.5.2.crate
+/btrd-0.5.2-vendor.tar.gz
diff --git a/btrd-bump-nix.patch b/btrd-bump-nix.patch
deleted file mode 100644
index 47c0e47..0000000
--- a/btrd-bump-nix.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-diff -Naur a/Cargo.lock b/Cargo.lock
---- a/Cargo.lock	1969-12-31 16:00:01.000000000 -0800
-+++ b/Cargo.lock	2021-10-26 13:31:36.126273907 -0700
-@@ -36,9 +36,9 @@
- 
- [[package]]
- name = "bitflags"
--version = "1.3.1"
-+version = "1.2.1"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "2da1976d75adbe5fbc88130ecd119529cf1cc6a93ae1546d8696ee66f0d21af1"
-+checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
- 
- [[package]]
- name = "btrd"
-@@ -48,7 +48,7 @@
-  "lazy_static",
-  "log",
-  "memmap2",
-- "nix 0.21.0",
-+ "nix 0.22.2",
-  "pom",
-  "rustyline",
-  "rustyline-derive",
-@@ -251,9 +251,9 @@
- 
- [[package]]
- name = "nix"
--version = "0.21.0"
-+version = "0.22.2"
- source = "registry+https://github.com/rust-lang/crates.io-index"
--checksum = "5c3728fec49d363a50a8828a190b379a446cc5cf085c06259bbbeb34447e4ec7"
-+checksum = "d3bb9a13fa32bc5aeb64150cd3f32d6cf4c748f8f8a417cce5d2eb976a8370ba"
- dependencies = [
-  "bitflags",
-  "cc",
-diff -Naur a/Cargo.toml b/Cargo.toml
---- a/Cargo.toml	1969-12-31 16:00:01.000000000 -0800
-+++ b/Cargo.toml	2021-10-26 13:31:57.715388958 -0700
-@@ -31,7 +31,7 @@
- version = "0.3"
- 
- [dependencies.nix]
--version = "0.21"
-+version = "0.22"
- 
- [dependencies.pom]
- version = "3.2"
-diff -Naur a/src/btrfs/fs.rs b/src/btrfs/fs.rs
---- a/src/btrfs/fs.rs	1973-11-29 13:33:09.000000000 -0800
-+++ b/src/btrfs/fs.rs	2021-10-26 13:31:36.127273913 -0700
-@@ -15,7 +15,6 @@
- use nix::fcntl::OFlag;
- use nix::ioctl_readwrite;
- use nix::sys::{stat::Mode, statfs::fstatfs};
--use nix::Error as NixError;
- 
- const BTRFS_SUPERBLOCK_MAGIC: [u8; 8] = *b"_BHRfS_M";
- const BTRFS_SUPERBLOCK_MAGIC_LOCS: [usize; 3] =
-@@ -202,7 +201,7 @@
- 
-             match unsafe { btrfs_tree_search_v2(fs.as_raw_fd(), &mut *args) } {
-                 Ok(_) => (),
--                Err(NixError::Sys(Errno::EOVERFLOW)) => (),
-+                Err(Errno::EOVERFLOW) => (),
-                 Err(e) => bail!(e),
-             };
- 
diff --git a/btrd-fix-metadata.diff b/btrd-fix-metadata.diff
deleted file mode 100644
index 269f5d3..0000000
--- a/btrd-fix-metadata.diff
+++ /dev/null
@@ -1,11 +0,0 @@
---- btrd-0.5.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ btrd-0.5.0/Cargo.toml	2022-02-20T16:38:57.037162+00:00
-@@ -43,7 +43,7 @@
- version = "0.4"
- 
- [dependencies.simplelog]
--version = "0.10"
-+version = "0.11"
- 
- [dependencies.structopt]
- version = "0.3"
diff --git a/rust-btrd.spec b/rust-btrd.spec
index 1db8b57..f44b83d 100644
--- a/rust-btrd.spec
+++ b/rust-btrd.spec
@@ -1,10 +1,17 @@
-# Generated by rust2rpm 20
+# Generated by rust2rpm 21
 %bcond_without check
 
 %global crate btrd
 
+%if 0%{?el8}
+# el8 doesn't have these macros
+%global __crates_url https://crates.io/api/v1/crates/
+%global crates_source %{__crates_url}%{crate}/%{version}/download#/%{crate}-%{version}.crate
+%global version_no_tilde %{version}
+%endif
+
 Name:           rust-%{crate}
-Version:        0.5.0
+Version:        0.5.2
 Release:        %autorelease
 Summary:        Btrfs debugger
 
@@ -12,15 +19,17 @@ Summary:        Btrfs debugger
 License:        GPLv2
 URL:            https://crates.io/crates/btrd
 Source:         %{crates_source}
-# Initial patched metadata
-# * Update simplelog to 0.11, https://github.com/danobi/btrd/pull/15
-Patch0:         btrd-fix-metadata.diff
-# Backport of PR#13: Bump nix to 0.22
-Patch1:         btrd-bump-nix.patch
+# vendored dependencies for EPEL
+# update with ./update-vendor-tarball.sh after bumping the specfile version
+Source1:        %{crate}-%{version}-vendor.tar.gz
 
 ExclusiveArch:  %{rust_arches}
 
-BuildRequires:  rust-packaging
+%if 0%{?rhel}
+BuildRequires:  rust-toolset
+%else
+BuildRequires:  rust-packaging >= 21
+%endif
 
 %global _description %{expand:
 btrd is a REPL debugger that helps inspect mounted btrfs filesystems. btrd is
@@ -39,6 +48,7 @@ Summary:        %{summary}
 %doc scripts README.md
 %{_bindir}/btrd
 
+%if 0%{?fedora}
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
@@ -49,9 +59,10 @@ This package contains library source intended for building other packages which
 use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE
-%doc docs README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE
+%doc %{crate_instdir}/README.md
+%doc %{crate_instdir}/docs
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -63,14 +74,19 @@ This package contains library source intended for building other packages which
 use the "default" feature of the "%{crate}" crate.
 
 %files       -n %{name}+default-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
+%endif
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
+%if 0%{?rhel}
+%cargo_prep -V 1
+%else
 %cargo_prep
 
 %generate_buildrequires
 %cargo_generate_buildrequires
+%endif
 
 %build
 %cargo_build
diff --git a/sources b/sources
index 893b0c1..9a29fbe 100644
--- a/sources
+++ b/sources
@@ -1 +1,2 @@
-SHA512 (btrd-0.5.0.crate) = 50b7c6b3e1929ca5d01ef28dc738ba6272e3ee457740f92b1214a3c9edfee3e48f0a7013197a5318b9cd7d90b19800275d50bea892f90327325653c6131ecb32
+SHA512 (btrd-0.5.2.crate) = 81438a48c596a2c06b5aecf0c3993b369d64f346274a4a400c23b70c74dea1fd7c69ee562cfbe58095d943fd6ef0be9b8f8a4f234d95ef4d120f9e79debdada5
+SHA512 (btrd-0.5.2-vendor.tar.gz) = 00e690d1059b2f381d08a0a00a36c8f3311840b0e96cf7b9e9c12628be68c6e1e9cff5d4a240d6e88ba3967bc9a0f4f2a2d98927cdb63d52011fc2b96ae1a9b7
diff --git a/update-vendor-tarball.sh b/update-vendor-tarball.sh
new file mode 100755
index 0000000..16cd73d
--- /dev/null
+++ b/update-vendor-tarball.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+name='btrd'
+specfile="rust-${name}.spec"
+version=$(rpm -q --qf '%{VERSION}\n' --specfile "$specfile" | head -1)
+nv="${name}-${version}"
+crate="${nv}.crate"
+vendor_tarball="${nv}-vendor.tar.gz"
+
+if [ -f "$vendor_tarball" ]; then
+  echo "${vendor_tarball} already exists, aborting"
+  exit 1
+fi
+
+[ -f "$crate" ] || spectool -g "$specfile"
+tardir="$PWD"
+workdir=$(mktemp -d)
+trap 'rm -rf "$workdir"' EXIT
+
+tar xvzf "$tardir/$crate" -C "$workdir"
+(cd "${workdir}/${nv}" && \
+  cargo vendor && \
+  tar cvzf "${tardir}/${vendor_tarball}" vendor/)
+
+exit 0