diff --git a/0001-Make-const-the-return-value-of-caml_named_value.patch b/0001-Make-const-the-return-value-of-caml_named_value.patch
deleted file mode 100644
index c8b7aee..0000000
--- a/0001-Make-const-the-return-value-of-caml_named_value.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-From 75b13978f85b32c7a121aa289d8ebf41ba14ee5a Mon Sep 17 00:00:00 2001
-From: Pino Toscano <ptoscano@redhat.com>
-Date: Thu, 5 Sep 2019 09:57:09 +0200
-Subject: [PATCH] Make const the return value of caml_named_value()
-
-With OCaml >= 4.09 caml_named_value() returns a const value *, so keep
-the constness to build also in this case.
-
-Signed-off-by: Pino Toscano <ptoscano@redhat.com>
----
- libvirt/libvirt_c_oneoffs.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/libvirt/libvirt_c_oneoffs.c b/libvirt/libvirt_c_oneoffs.c
-index 6f56f10..e23c0db 100644
---- a/libvirt/libvirt_c_oneoffs.c
-+++ b/libvirt/libvirt_c_oneoffs.c
-@@ -1207,7 +1207,7 @@ ocaml_libvirt_event_run_default_impl (value unitv)
- #define DOMAIN_CALLBACK_BEGIN(NAME)                              \
-   value connv, domv, callback_id, result;                        \
-   connv = domv = callback_id = result = Val_int(0);              \
--  static value *callback = NULL;                                 \
-+  static const value *callback = NULL;                           \
-   caml_leave_blocking_section();                                 \
-   if (callback == NULL)                                          \
-     callback = caml_named_value(NAME);                           \
-@@ -1433,7 +1433,7 @@ timeout_callback(int timer, void *opaque)
- {
-   value callback_id, result;
-   callback_id = result = Val_int(0);
--  static value *callback = NULL;
-+  static const value *callback = NULL;
-   caml_leave_blocking_section();
-   if (callback == NULL)
-     callback = caml_named_value("Libvirt.timeout_callback");
--- 
-2.23.0
-
diff --git a/0001-block_peek-memory_peek-Use-bytes-for-return-buffer.patch b/0001-block_peek-memory_peek-Use-bytes-for-return-buffer.patch
deleted file mode 100644
index f3b93af..0000000
--- a/0001-block_peek-memory_peek-Use-bytes-for-return-buffer.patch
+++ /dev/null
@@ -1,74 +0,0 @@
-From 29709872404fad20a9822c43a831f30b7b09f34a Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Sun, 19 Jan 2020 12:58:17 +0000
-Subject: [PATCH 1/3] block_peek, memory_peek: Use bytes for return buffer.
-
-Strings are immutable in modern OCaml.
----
- libvirt/libvirt.ml          | 4 ++--
- libvirt/libvirt.mli         | 4 ++--
- libvirt/libvirt_c_oneoffs.c | 4 ++--
- 3 files changed, 6 insertions(+), 6 deletions(-)
-
-diff --git a/libvirt/libvirt.ml b/libvirt/libvirt.ml
-index 7f9d0e4..bdb9460 100644
---- a/libvirt/libvirt.ml
-+++ b/libvirt/libvirt.ml
-@@ -731,8 +731,8 @@ struct
-   external migrate : [>`W] t -> [>`W] Connect.t -> migrate_flag list -> ?dname:string -> ?uri:string -> ?bandwidth:int -> unit -> rw t = "ocaml_libvirt_domain_migrate_bytecode" "ocaml_libvirt_domain_migrate_native"
-   external block_stats : [>`R] t -> string -> block_stats = "ocaml_libvirt_domain_block_stats"
-   external interface_stats : [>`R] t -> string -> interface_stats = "ocaml_libvirt_domain_interface_stats"
--  external block_peek : [>`W] t -> string -> int64 -> int -> string -> int -> unit = "ocaml_libvirt_domain_block_peek_bytecode" "ocaml_libvirt_domain_block_peek_native"
--  external memory_peek : [>`W] t -> memory_flag list -> int64 -> int -> string -> int -> unit = "ocaml_libvirt_domain_memory_peek_bytecode" "ocaml_libvirt_domain_memory_peek_native"
-+  external block_peek : [>`W] t -> string -> int64 -> int -> bytes -> int -> unit = "ocaml_libvirt_domain_block_peek_bytecode" "ocaml_libvirt_domain_block_peek_native"
-+  external memory_peek : [>`W] t -> memory_flag list -> int64 -> int -> bytes -> int -> unit = "ocaml_libvirt_domain_memory_peek_bytecode" "ocaml_libvirt_domain_memory_peek_native"
- 
-   external get_all_domain_stats : [>`R] Connect.t -> stats_type list -> get_all_domain_stats_flag list -> domain_stats_record array = "ocaml_libvirt_domain_get_all_domain_stats"
- 
-diff --git a/libvirt/libvirt.mli b/libvirt/libvirt.mli
-index 0d74199..7900392 100644
---- a/libvirt/libvirt.mli
-+++ b/libvirt/libvirt.mli
-@@ -708,7 +708,7 @@ sig
-   val interface_stats : [>`R] t -> string -> interface_stats
-     (** Returns network interface stats. *)
- 
--  val block_peek : [>`W] t -> string -> int64 -> int -> string -> int -> unit
-+  val block_peek : [>`W] t -> string -> int64 -> int -> bytes -> int -> unit
-     (** [block_peek dom path offset size buf boff] reads [size] bytes at
- 	[offset] in the domain's [path] block device.
- 
-@@ -717,7 +717,7 @@ sig
- 
- 	See also {!max_peek}. *)
-   val memory_peek : [>`W] t -> memory_flag list -> int64 -> int ->
--    string -> int -> unit
-+    bytes -> int -> unit
-     (** [memory_peek dom Virtual offset size] reads [size] bytes
- 	at [offset] in the domain's virtual memory.
- 
-diff --git a/libvirt/libvirt_c_oneoffs.c b/libvirt/libvirt_c_oneoffs.c
-index 40384e8..8468c73 100644
---- a/libvirt/libvirt_c_oneoffs.c
-+++ b/libvirt/libvirt_c_oneoffs.c
-@@ -1057,7 +1057,7 @@ ocaml_libvirt_domain_block_peek_native (value domv, value pathv, value offsetv,
-   const char *path = String_val (pathv);
-   unsigned long long offset = Int64_val (offsetv);
-   size_t size = Int_val (sizev);
--  char *buffer = String_val (bufferv);
-+  unsigned char *buffer = Bytes_val (bufferv);
-   int boff = Int_val (boffv);
-   int r;
- 
-@@ -1089,7 +1089,7 @@ ocaml_libvirt_domain_memory_peek_native (value domv, value flagsv, value offsetv
-   int flags = 0;
-   unsigned long long offset = Int64_val (offsetv);
-   size_t size = Int_val (sizev);
--  char *buffer = String_val (bufferv);
-+  unsigned char *buffer = Bytes_val (bufferv);
-   int boff = Int_val (boffv);
-   int r;
- 
--- 
-2.24.1
-
diff --git a/0002-String_val-returns-const-char-in-OCaml-4.10.patch b/0002-String_val-returns-const-char-in-OCaml-4.10.patch
deleted file mode 100644
index 4f547cb..0000000
--- a/0002-String_val-returns-const-char-in-OCaml-4.10.patch
+++ /dev/null
@@ -1,113 +0,0 @@
-From 3705b9bdcd04dc86474c62e1c8dd8759669842bc Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Sun, 19 Jan 2020 12:59:09 +0000
-Subject: [PATCH 2/3] String_val returns const char * in OCaml 4.10.
-
-This should be compatible with earlier versions of OCaml
-too since we are just assigning a char * to a const char *.
----
- libvirt/generator.pl        | 14 +++++++-------
- libvirt/libvirt_c_oneoffs.c |  6 +++---
- 2 files changed, 10 insertions(+), 10 deletions(-)
-
-diff --git a/libvirt/generator.pl b/libvirt/generator.pl
-index ac3dd65..aff371b 100755
---- a/libvirt/generator.pl
-+++ b/libvirt/generator.pl
-@@ -593,7 +593,7 @@ sub gen_c_code
-     } elsif ($sig =~ /^(\w+), string : unit$/) {
- 	"\
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   int r;
- 
-   NONBLOCKING (r = $c_name ($1, str));
-@@ -605,7 +605,7 @@ sub gen_c_code
- 	"\
-   CAMLlocal1 (rv);
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   int r;
- 
-   NONBLOCKING (r = $c_name ($1, str, 0));
-@@ -618,7 +618,7 @@ sub gen_c_code
- 	"\
-   CAMLlocal1 (rv);
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   $c_ret_type r;
- 
-   NONBLOCKING (r = $c_name ($1, str));
-@@ -633,7 +633,7 @@ sub gen_c_code
- 	"\
-   CAMLlocal1 (rv);
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   $c_ret_type r;
- 
-   NONBLOCKING (r = $c_name ($1, str, 0));
-@@ -648,7 +648,7 @@ sub gen_c_code
- 	"\
-   CAMLlocal1 (rv);
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   unsigned int u = Int_val (uv);
-   $c_ret_type r;
- 
-@@ -735,7 +735,7 @@ sub gen_c_code
- 	"\
-   CAMLlocal2 (rv, connv);
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   $c_ret_type r;
- 
-   NONBLOCKING (r = $c_name ($1, str));
-@@ -751,7 +751,7 @@ sub gen_c_code
- 	"\
-   CAMLlocal2 (rv, connv);
-   " . gen_unpack_args ($1) . "
--  char *str = String_val (strv);
-+  const char *str = String_val (strv);
-   $c_ret_type r;
- 
-   NONBLOCKING (r = $c_name ($1, str, 0));
-diff --git a/libvirt/libvirt_c_oneoffs.c b/libvirt/libvirt_c_oneoffs.c
-index 8468c73..fc2ac13 100644
---- a/libvirt/libvirt_c_oneoffs.c
-+++ b/libvirt/libvirt_c_oneoffs.c
-@@ -601,7 +601,7 @@ ocaml_libvirt_domain_set_scheduler_parameters (value domv, value paramsv)
-   int nparams = Wosize_val (paramsv);
-   virSchedParameterPtr params;
-   int r, i;
--  char *name;
-+  const char *name;
- 
-   params = malloc (sizeof (*params) * nparams);
-   if (params == NULL)
-@@ -1005,7 +1005,7 @@ ocaml_libvirt_domain_block_stats (value domv, value pathv)
-   CAMLparam2 (domv, pathv);
-   CAMLlocal2 (rv,v);
-   virDomainPtr dom = Domain_val (domv);
--  char *path = String_val (pathv);
-+  const char *path = String_val (pathv);
-   struct _virDomainBlockStats stats;
-   int r;
- 
-@@ -1028,7 +1028,7 @@ ocaml_libvirt_domain_interface_stats (value domv, value pathv)
-   CAMLparam2 (domv, pathv);
-   CAMLlocal2 (rv,v);
-   virDomainPtr dom = Domain_val (domv);
--  char *path = String_val (pathv);
-+  const char *path = String_val (pathv);
-   struct _virDomainInterfaceStats stats;
-   int r;
- 
--- 
-2.24.1
-
diff --git a/0003-Don-t-try-to-memcpy-into-a-String_val.patch b/0003-Don-t-try-to-memcpy-into-a-String_val.patch
deleted file mode 100644
index 720787f..0000000
--- a/0003-Don-t-try-to-memcpy-into-a-String_val.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-From 3d3d6af425d369200a7a62a127adf640d94a38a3 Mon Sep 17 00:00:00 2001
-From: "Richard W.M. Jones" <rjones@redhat.com>
-Date: Sun, 19 Jan 2020 13:02:16 +0000
-Subject: [PATCH 3/3] Don't try to memcpy into a String_val.
-
-In OCaml 4.10 String_val returns const char *, so we cannot use it as
-the destination for memcpy.  Use Bytes_val instead.
----
- libvirt/generator.pl        | 2 +-
- libvirt/libvirt_c_oneoffs.c | 8 ++++----
- 2 files changed, 5 insertions(+), 5 deletions(-)
-
-diff --git a/libvirt/generator.pl b/libvirt/generator.pl
-index aff371b..463a19b 100755
---- a/libvirt/generator.pl
-+++ b/libvirt/generator.pl
-@@ -440,7 +440,7 @@ sub gen_c_code
- 
-   /* UUIDs are byte arrays with a fixed length. */
-   rv = caml_alloc_string (VIR_UUID_BUFLEN);
--  memcpy (String_val (rv), uuid, VIR_UUID_BUFLEN);
-+  memcpy (Bytes_val (rv), uuid, VIR_UUID_BUFLEN);
-   CAMLreturn (rv);
- "
-     } elsif ($sig =~ /^(\w+) : uuid string$/) {
-diff --git a/libvirt/libvirt_c_oneoffs.c b/libvirt/libvirt_c_oneoffs.c
-index fc2ac13..e8472b7 100644
---- a/libvirt/libvirt_c_oneoffs.c
-+++ b/libvirt/libvirt_c_oneoffs.c
-@@ -394,7 +394,7 @@ ocaml_libvirt_connect_call_auth_default_callback (value listv)
-       elemv = caml_alloc (2, 0);
-       if (cred->result != NULL && cred->resultlen > 0) {
-         v = caml_alloc_string (cred->resultlen);
--        memcpy (String_val (v), cred->result, cred->resultlen);
-+        memcpy (Bytes_val (v), cred->result, cred->resultlen);
-         optv = caml_alloc (1, 0);
-         Store_field (optv, 0, v);
-       } else
-@@ -715,7 +715,7 @@ ocaml_libvirt_domain_get_vcpus (value domv, value maxinfov, value maplenv)
- 
-   /* Copy the bitmap. */
-   strv = caml_alloc_string (maxinfo * maplen);
--  memcpy (String_val (strv), cpumaps, maxinfo * maplen);
-+  memcpy (Bytes_val (strv), cpumaps, maxinfo * maplen);
- 
-   /* Allocate the tuple and return it. */
-   rv = caml_alloc_tuple (3);
-@@ -900,7 +900,7 @@ ocaml_libvirt_domain_get_all_domain_stats (value connv,
-      */
-     v = caml_alloc_string (VIR_UUID_BUFLEN);
-     virDomainGetUUID (rstats[i]->dom, uuid);
--    memcpy (String_val (v), uuid, VIR_UUID_BUFLEN);
-+    memcpy (Bytes_val (v), uuid, VIR_UUID_BUFLEN);
-     Store_field (dsv, 0, v);
- 
-     tpv = caml_alloc (rstats[i]->nparams, 0); /* typed_param array */
-@@ -1646,7 +1646,7 @@ ocaml_libvirt_secret_get_value (value secv)
-   CHECK_ERROR (secval == NULL, "virSecretGetValue");
- 
-   rv = caml_alloc_string (size);
--  memcpy (String_val (rv), secval, size);
-+  memcpy (Bytes_val (rv), secval, size);
-   free (secval);
- 
-   CAMLreturn (rv);
--- 
-2.24.1
-
diff --git a/ocaml-libvirt.spec b/ocaml-libvirt.spec
index 3b8a025..be46822 100644
--- a/ocaml-libvirt.spec
+++ b/ocaml-libvirt.spec
@@ -1,21 +1,15 @@
 %undefine _package_note_flags
 Name:           ocaml-libvirt
-Version:        0.6.1.5
-Release:        20%{?dist}
+Version:        0.6.1.6
+Release:        1%{?dist}
 Summary:        OCaml binding for libvirt
 License:        LGPLv2+
 
 URL:            http://libvirt.org/ocaml/
-Source0:        http://libvirt.org/sources/ocaml/%{name}-%{version}.tar.gz
-
-# Fixes build with OCaml >= 4.09.
-# Upstream commit 75b13978f85b32c7a121aa289d8ebf41ba14ee5a.
-Patch1:         0001-Make-const-the-return-value-of-caml_named_value.patch
-
-# Fixes for OCaml 4.10, sent upstream 2020-01-19.
-Patch2:         0001-block_peek-memory_peek-Use-bytes-for-return-buffer.patch
-Patch3:         0002-String_val-returns-const-char-in-OCaml-4.10.patch
-Patch4:         0003-Don-t-try-to-memcpy-into-a-String_val.patch
+#Source0:        http://libvirt.org/sources/ocaml/%{name}-%{version}.tar.gz
+# The tarball was not uploaded to the website at the time of packaging
+# so I built this using "make dist" in the source repo.
+Source0:        %{name}-%{version}.tar.gz
 
 BuildRequires: make
 BuildRequires:  ocaml >= 3.10.0
@@ -91,6 +85,10 @@ make install-byte
 
 
 %changelog
+* Thu Apr 28 2022 Richard W.M. Jones <rjones@redhat.com> - 0.6.1.6-1
+- New upstream version 0.6.1.6
+- Remove patches which are all upstream.
+
 * Fri Feb 04 2022 Richard W.M. Jones <rjones@redhat.com> - 0.6.1.5-20
 - OCaml 4.13.1 rebuild to remove package notes
 
diff --git a/sources b/sources
index 46a2bdf..c95b0bf 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ocaml-libvirt-0.6.1.5.tar.gz) = 7862732348932049994d06b5212486984408627c4cf510c6048489e846435e393392241dd342fdc57bc0b077a80aa1efda843547b141e226c9770c21afd4da53
+SHA512 (ocaml-libvirt-0.6.1.6.tar.gz) = 9846b75f2107368eef1d538c5accbc5ac9472f59dd5e0e1e404c3a417e6f25fae4b076a912ff396f2211fda1fd1ef936f6d039e865c015747a79722addec9ab1