diff --git a/.gitignore b/.gitignore
index ed4715f..88bb691 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /combine-4.6.0.crate
 /combine-4.6.3.crate
 /combine-4.6.4.crate
+/combine-4.6.6.crate
diff --git a/combine-drop-tokio-03.patch b/combine-drop-tokio-03.patch
deleted file mode 100644
index cacd4b3..0000000
--- a/combine-drop-tokio-03.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-diff -Naur a/tests/support/mod.rs b/tests/support/mod.rs
---- a/tests/support/mod.rs	1969-12-31 16:00:00.000000000 -0800
-+++ b/tests/support/mod.rs	2021-07-14 21:47:18.502065660 -0700
-@@ -61,42 +61,6 @@
-     }
- }
- 
--impl<R> tokio_03_dep::io::AsyncRead for PartialAsyncRead<R>
--where
--    R: tokio_03_dep::io::AsyncRead + Unpin,
--{
--    fn poll_read(
--        mut self: Pin<&mut Self>,
--        cx: &mut task::Context<'_>,
--        buf: &mut tokio_03_dep::io::ReadBuf<'_>,
--    ) -> Poll<io::Result<()>> {
--        match self.ops.next() {
--            Some(PartialOp::Limited(n)) => {
--                let len = std::cmp::min(n, buf.remaining());
--                buf.initialize_unfilled();
--                let mut sub_buf = buf.take(len);
--                ready!(Pin::new(&mut self.inner).poll_read(cx, &mut sub_buf))?;
--                let filled = sub_buf.filled().len();
--                buf.advance(filled);
--                Poll::Ready(Ok(()))
--            }
--            Some(PartialOp::Err(err)) => {
--                if err == io::ErrorKind::WouldBlock {
--                    cx.waker().wake_by_ref();
--                    Poll::Pending
--                } else {
--                    Err(io::Error::new(
--                        err,
--                        "error during read, generated by partial-io",
--                    ))
--                    .into()
--                }
--            }
--            Some(PartialOp::Unlimited) | None => Pin::new(&mut self.inner).poll_read(cx, buf),
--        }
--    }
--}
--
- impl<R> tokio_dep::io::AsyncRead for PartialAsyncRead<R>
- where
-     R: tokio_dep::io::AsyncRead + Unpin,
diff --git a/combine-fix-metadata.diff b/combine-fix-metadata.diff
index f41bb46..5162506 100644
--- a/combine-fix-metadata.diff
+++ b/combine-fix-metadata.diff
@@ -1,6 +1,6 @@
---- combine-4.6.4/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ combine-4.6.4/Cargo.toml	2022-05-25T13:15:54.690439+00:00
-@@ -126,12 +126,6 @@
+--- combine-4.6.6/Cargo.toml	1970-01-01T00:00:01+00:00
++++ combine-4.6.6/Cargo.toml	2022-08-10T19:32:50.511737+00:00
+@@ -127,12 +127,6 @@
  default-features = false
  package = "tokio"
  
@@ -13,7 +13,18 @@
  [dependencies.tokio-dep]
  version = "1"
  optional = true
-@@ -185,15 +179,6 @@
+@@ -154,10 +148,6 @@
+ [dev-dependencies.bytes_05]
+ version = "0.5"
+ package = "bytes"
+-
+-[dev-dependencies.criterion]
+-version = "0.3"
+-default-features = false
+ 
+ [dev-dependencies.futures-03-dep]
+ version = "0.3.1"
+@@ -186,15 +176,6 @@
      "io-driver",
      "io-util",
      "macros",
@@ -29,7 +40,7 @@
  ]
  package = "tokio"
  
-@@ -239,10 +224,3 @@
+@@ -240,10 +221,3 @@
      "pin-project-lite",
      "bytes_05",
  ]
diff --git a/rust-combine.spec b/rust-combine.spec
index 61bbd7a..6539f59 100644
--- a/rust-combine.spec
+++ b/rust-combine.spec
@@ -1,22 +1,22 @@
-# Generated by rust2rpm 21
+# Generated by rust2rpm 22
 # * tests rely on missing or removed dev-dependencies
 %bcond_with check
 %global debug_package %{nil}
 
 %global crate combine
 
-Name:           rust-%{crate}
-Version:        4.6.4
+Name:           rust-combine
+Version:        4.6.6
 Release:        %autorelease
 Summary:        Fast parser combinators on arbitrary streams with zero-copy support
 
-# Upstream license specification: MIT
 License:        MIT
 URL:            https://crates.io/crates/combine
 Source:         %{crates_source}
-# Initial patched metadata
+# Manually created patch for downstream crate metadata changes
+# * drop unused, benchmark-only criterion dev-dependency to speed up builds
 # * drop features and dependencies for tokio 0.3
-Patch0:         combine-fix-metadata.diff
+Patch:          combine-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
diff --git a/sources b/sources
index 5a7c2fc..485a32a 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (combine-4.6.4.crate) = 2550aba009b8ab66230e7b21fd1cb5085c92bc280e31f35c9b02dc78fa138ef9b9ece0d7801473b88d11866b013c6fa3bb6e9611bdc1a7b85144e50a49829774
+SHA512 (combine-4.6.6.crate) = ff9ef9329de2cfc103271a25ad1fcb7e478f3328843bd8a65653e80b74112728ad4a33326a58ed7ef8cf39eec7c3b797fc287295ba149ee0dccb1de9721b5819