release-1.33.1 (#864)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 948e7ed..9862406 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@
 INCLUDE (CheckStructHasMember)
 INCLUDE (CheckLibraryExists)
 
-PROJECT (c-ares LANGUAGES C VERSION "1.33.0" )
+PROJECT (c-ares LANGUAGES C VERSION "1.33.1" )
 
 # Set this version before release
 SET (CARES_VERSION "${PROJECT_VERSION}")
@@ -30,7 +30,7 @@
 # For example, a version of 4:0:2 would generate output such as:
 #    libname.so   -> libname.so.2
 #    libname.so.2 -> libname.so.2.2.0
-SET (CARES_LIB_VERSIONINFO "20:0:18")
+SET (CARES_LIB_VERSIONINFO "20:1:18")
 
 
 OPTION (CARES_STATIC        "Build as a static library"                                             OFF)
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
index b072feb..e9c0495 100644
--- a/RELEASE-NOTES.md
+++ b/RELEASE-NOTES.md
@@ -1,3 +1,35 @@
+## c-ares version 1.33.1 - August 23 2024
+
+This is a bugfix release.
+
+Bugfixes:
+* Work around systemd-resolved quirk that returns unexpected codes for single
+  label names.  Also adds test cases to validate the work around works and
+  will continue to work in future releases.
+  [PR #863](https://github.com/c-ares/c-ares/pull/863),
+  See Also https://github.com/systemd/systemd/issues/34101
+* Fix sysconfig ndots default value, also adds containerized test case to
+  prevent future regressions.
+  [PR #862](https://github.com/c-ares/c-ares/pull/862)
+* Fix blank DNS name returning error code rather than valid record for
+  commands like: `adig -t SOA .`.  Also adds test case to prevent future
+  regressions.
+  [9e574af](https://github.com/c-ares/c-ares/commit/9e574af)
+* Fix calculation of query times > 1s.
+  [2b2eae7](https://github.com/c-ares/c-ares/commit/2b2eae7)
+* Fix building on old Linux releases that don't have `TCP_FASTOPEN_CONNECT`.
+  [b7a89b9](https://github.com/c-ares/c-ares/commit/b7a89b9)
+* Fix minor Android build warnings.
+  [PR #848](https://github.com/c-ares/c-ares/pull/848)
+
+Thanks go to these friendly people for their efforts and contributions for this
+release:
+* Brad House (@bradh352)
+* Erik Lax (@eriklax)
+* Hans-Christian Egtvedt (@egtvedt)
+* Mikael Lindemann (@mikaellindemann)
+* Nodar Chkuaselidze (@nodech)
+
 ## c-ares version 1.33.0 - August 2 2024
 
 This is a feature and bugfix release.
diff --git a/configure.ac b/configure.ac
index 3b555fb..59fd975 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,10 +2,10 @@
 dnl SPDX-License-Identifier: MIT
 AC_PREREQ([2.69])
 
-AC_INIT([c-ares], [1.33.0],
+AC_INIT([c-ares], [1.33.1],
   [c-ares mailing list: http://lists.haxx.se/listinfo/c-ares])
 
-CARES_VERSION_INFO="20:0:18"
+CARES_VERSION_INFO="20:1:18"
 dnl This flag accepts an argument of the form current[:revision[:age]]. So,
 dnl passing -version-info 3:12:1 sets current to 3, revision to 12, and age to
 dnl 1.
diff --git a/include/ares_version.h b/include/ares_version.h
index fef66b7..c910d79 100644
--- a/include/ares_version.h
+++ b/include/ares_version.h
@@ -32,11 +32,11 @@
 
 #define ARES_VERSION_MAJOR 1
 #define ARES_VERSION_MINOR 33
-#define ARES_VERSION_PATCH 0
+#define ARES_VERSION_PATCH 1
 #define ARES_VERSION                                        \
   ((ARES_VERSION_MAJOR << 16) | (ARES_VERSION_MINOR << 8) | \
    (ARES_VERSION_PATCH))
-#define ARES_VERSION_STR "1.33.0"
+#define ARES_VERSION_STR "1.33.1"
 
 #define CARES_HAVE_ARES_LIBRARY_INIT    1
 #define CARES_HAVE_ARES_LIBRARY_CLEANUP 1