diff --git a/.appveyor.yml b/.appveyor.yml
index ea561e30..8a7f631b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,4 +1,4 @@
-version: 1.9.0-R-post{build}
+version: 1.9.1-R-post{build}
 pull_requests:
   do_not_increment_build_number: true
 image: Visual Studio 2019
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8d15152..c4eaf8a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,15 @@
+# librdkafka v1.9.1
+
+librdkafka v1.9.1 is a maintenance release.
+
+
+## Fixes
+
+ * Self-contained static libraries can now be built on OSX M1 too, thanks to
+   disabling curl's configure runtime check.
+
+
+
 # librdkafka v1.9.0
 
 librdkafka v1.9.0 is a feature release:
diff --git a/src-cpp/rdkafkacpp.h b/src-cpp/rdkafkacpp.h
index fd758d75..e41092f0 100644
--- a/src-cpp/rdkafkacpp.h
+++ b/src-cpp/rdkafkacpp.h
@@ -111,7 +111,7 @@ namespace RdKafka {
  * @remark This value should only be used during compile time,
  *         for runtime checks of version use RdKafka::version()
  */
-#define RD_KAFKA_VERSION 0x010900ff
+#define RD_KAFKA_VERSION 0x010901ff
 
 /**
  * @brief Returns the librdkafka version as integer.
diff --git a/src/rdkafka.h b/src/rdkafka.h
index 04ea7fc5..280d1c18 100644
--- a/src/rdkafka.h
+++ b/src/rdkafka.h
@@ -165,7 +165,7 @@ typedef SSIZE_T ssize_t;
  * @remark This value should only be used during compile time,
  *         for runtime checks of version use rd_kafka_version()
  */
-#define RD_KAFKA_VERSION 0x010900ff
+#define RD_KAFKA_VERSION 0x010901ff
 
 /**
  * @brief Returns the librdkafka version as integer.
diff --git a/vcpkg.json b/vcpkg.json
index f2953d0d..42c72c71 100644
--- a/vcpkg.json
+++ b/vcpkg.json
@@ -1,6 +1,6 @@
 {
     "name": "librdkafka",
-    "version": "1.9.0",
+    "version": "1.9.1",
     "dependencies": [
         {
             "name": "zstd",