diff --git a/.gitignore b/.gitignore
index ded2367..bbed2d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 /sequoia-openpgp-1.12.0.crate
 /sequoia-openpgp-1.13.0.crate
 /sequoia-openpgp-1.14.0.crate
+/sequoia-openpgp-1.15.0.crate
diff --git a/aacdf9b.patch b/aacdf9b.patch
deleted file mode 100644
index 0da7120..0000000
--- a/aacdf9b.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-From aacdf9b232c383693fa0c6d9411d3ec168b9487a Mon Sep 17 00:00:00 2001
-From: Wiktor Kwapisiewicz <wiktor@metacode.biz>
-Date: Thu, 19 Jan 2023 09:55:34 +0100
-Subject: [PATCH] Fix EC curve detection.
-
-  - Some systems have smaller set of supported curves and even though the
-    curve identifiers are compiled in the usage of the curve fails.
-
-  - Try to construct an `EcGroup` using retrieved `Nid` as this is a cheap
-    check that will fail if the curve is truly unsupported.
-
-  - Fixes #976.
----
- src/crypto/backend/openssl.rs | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/src/crypto/backend/openssl.rs b/src/crypto/backend/openssl.rs
-index 4e610bfe8..aa5c9db7d 100644
---- a/src/crypto/backend/openssl.rs
-+++ b/src/crypto/backend/openssl.rs
-@@ -43,7 +43,11 @@ impl Curve {
-         } else {
-             // the rest of EC algorithms are supported via the same
-             // codepath
--            openssl::nid::Nid::try_from(self).is_ok()
-+            if let Ok(nid) = openssl::nid::Nid::try_from(self) {
-+                openssl::ec::EcGroup::from_curve_name(nid).is_ok()
-+            } else {
-+                false
-+            }
-         }
-     }
- }
--- 
-GitLab
-
diff --git a/rust-sequoia-openpgp.spec b/rust-sequoia-openpgp.spec
index 032a0db..37ce42d 100644
--- a/rust-sequoia-openpgp.spec
+++ b/rust-sequoia-openpgp.spec
@@ -5,7 +5,7 @@
 %global crate sequoia-openpgp
 
 Name:           rust-sequoia-openpgp
-Version:        1.14.0
+Version:        1.15.0
 Release:        %autorelease
 Summary:        OpenPGP data types and associated machinery
 
@@ -17,7 +17,7 @@ Patch:          sequoia-openpgp-fix-metadata-auto.diff
 # Manually created patch for downstream crate metadata changes
 # * drop feature for Windows-specific crypto backend
 # * drop unused, benchmark-only criterion dev-dependency to speed up builds
-# * drop example-only rpassword dev-dependency (currently too old in Fedora)
+# * drop example-only rpassword dev-dependency (currently too old in EPEL 9)
 Patch:          sequoia-openpgp-fix-metadata.diff
 
 BuildRequires:  rust-packaging >= 21
@@ -173,18 +173,6 @@ use the "flate2" feature of the "%{crate}" crate.
 %files       -n %{name}+flate2-devel
 %ghost %{crate_instdir}/Cargo.toml
 
-%package     -n %{name}+foreign-types-shared-devel
-Summary:        %{summary}
-BuildArch:      noarch
-
-%description -n %{name}+foreign-types-shared-devel %{_description}
-
-This package contains library source intended for building other packages which
-use the "foreign-types-shared" feature of the "%{crate}" crate.
-
-%files       -n %{name}+foreign-types-shared-devel
-%ghost %{crate_instdir}/Cargo.toml
-
 %package     -n %{name}+nettle-devel
 Summary:        %{summary}
 BuildArch:      noarch
@@ -242,9 +230,7 @@ rm examples/{notarize.rs,sign.rs,sign-detached.rs}
 # * run tests with nettle crypto backend (default)
 %cargo_test -n -f crypto-nettle,compression
 # * run tests with openssl crypto backend
-# * skip test that fails with OpenSSL < 3.0.7 due to missing RIPEMD160 algorithm:
-#   https://gitlab.com/sequoia-pgp/sequoia/-/issues/979
-%cargo_test -n -f crypto-openssl,compression -- -- --skip packet::one_pass_sig::tests::roundtrip
+%cargo_test -n -f crypto-openssl,compression
 %endif
 
 %changelog
diff --git a/rust2rpm.conf b/rust2rpm.conf
index e9be34f..b1064dd 100644
--- a/rust2rpm.conf
+++ b/rust2rpm.conf
@@ -1,16 +1,18 @@
 [DEFAULT]
 unwanted-features =
   aes
-  block-modes
   block-padding
   blowfish
   botan
   cast5
+  cfb-mode
   cipher
   des
   digest
   eax
+  ecb
   ecdsa
+  ed25519
   ed25519-dalek
   generic-array
   idea
@@ -18,13 +20,14 @@ unwanted-features =
   num-bigint-dig
   p256
   rand07
+  rand
   rand_core
-  ripemd160
+  ripemd
   rsa
   sha-1
   sha2
   twofish
   typenum
-  x25519-dalek
+  x25519-dalek-ng
   crypto-botan
   crypto-rust
diff --git a/sequoia-openpgp-fix-metadata-auto.diff b/sequoia-openpgp-fix-metadata-auto.diff
index c9e9b3c..81be660 100644
--- a/sequoia-openpgp-fix-metadata-auto.diff
+++ b/sequoia-openpgp-fix-metadata-auto.diff
@@ -1,15 +1,15 @@
---- sequoia-openpgp-1.14.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ sequoia-openpgp-1.14.0/Cargo.toml	2023-03-25T21:39:42.452829+00:00
-@@ -286,8 +286,6 @@
- crypto-botan = ["botan"]
+--- sequoia-openpgp-1.15.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ sequoia-openpgp-1.15.0/Cargo.toml	2023-05-06T19:43:47.023678+00:00
+@@ -302,8 +302,6 @@
  crypto-cng = [
+     "cipher",
      "eax",
 -    "winapi",
 -    "win-crypto-ng",
      "ed25519-dalek",
      "num-bigint-dig",
  ]
-@@ -330,37 +328,6 @@
+@@ -348,37 +346,6 @@
      "crypto-nettle",
  ]
  
@@ -31,7 +31,7 @@
 -package = "rand"
 -
 -[target."cfg(windows)".dependencies.win-crypto-ng]
--version = "0.4"
+-version = ">=0.4, <0.6"
 -features = [
 -    "rand",
 -    "block-cipher",
diff --git a/sequoia-openpgp-fix-metadata.diff b/sequoia-openpgp-fix-metadata.diff
index 823a221..482d062 100644
--- a/sequoia-openpgp-fix-metadata.diff
+++ b/sequoia-openpgp-fix-metadata.diff
@@ -1,11 +1,11 @@
---- sequoia-openpgp-1.14.0/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ sequoia-openpgp-1.14.0/Cargo.toml	2023-03-25T21:41:01.746107+00:00
-@@ -249,19 +249,12 @@
+--- sequoia-openpgp-1.15.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ sequoia-openpgp-1.15.0/Cargo.toml	2023-05-06T19:44:10.852727+00:00
+@@ -264,19 +264,12 @@
  version = "0.8"
  features = ["xxh3"]
  
 -[dev-dependencies.criterion]
--version = "0.3.4"
+-version = "0.4"
 -features = ["html_reports"]
 -
  [dev-dependencies.quickcheck]
@@ -19,12 +19,13 @@
 -version = "6.0"
  
  [build-dependencies.lalrpop]
- version = ">=0.17"
-@@ -284,11 +277,6 @@
+ version = ">=0.17, <0.20"
+@@ -299,12 +292,6 @@
      "buffered-reader/compression-deflate",
  ]
  crypto-botan = ["botan"]
 -crypto-cng = [
+-    "cipher",
 -    "eax",
 -    "ed25519-dalek",
 -    "num-bigint-dig",
diff --git a/sources b/sources
index b0e0776..fe93c8f 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (sequoia-openpgp-1.14.0.crate) = aad9d82eb8e589c241eeb7155549294116f35d4790a15740273247a8f1366db4fbdf123dccdc2a4b6bb5b5658ad5925698b30538a8668330d9970b89701a7765
+SHA512 (sequoia-openpgp-1.15.0.crate) = 01603db1706c266eb1a66132de17936be3ab38bbdff958edf8f97d7b8bbde9ac82b16f324ae442241380cf6f82d9369463591c16b34cfc7938395a55ccef865e