diff --git a/CHANGELOG.md b/CHANGELOG.md
index b53e7ad..91e5005 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## [1.1.0] - 2023-08-28
+
 ### Added
  - decoder: `BrotliDecoderAttachDictionary`
  - decoder: `BrotliDecoderOnFinish` callback behind `BROTLI_REPORTING`
diff --git a/c/common/version.h b/c/common/version.h
index 0939eb8..8098040 100644
--- a/c/common/version.h
+++ b/c/common/version.h
@@ -18,8 +18,8 @@
    BrotliEncoderVersion methods. */
 
 #define BROTLI_VERSION_MAJOR 1
-#define BROTLI_VERSION_MINOR 0
-#define BROTLI_VERSION_PATCH 9
+#define BROTLI_VERSION_MINOR 1
+#define BROTLI_VERSION_PATCH 0
 
 #define BROTLI_VERSION BROTLI_MAKE_HEX_VERSION(                     \
   BROTLI_VERSION_MAJOR, BROTLI_VERSION_MINOR, BROTLI_VERSION_PATCH)
@@ -32,8 +32,20 @@
     - interfaces not changed                          -> current:revision+1:age
  */
 
-#define BROTLI_ABI_CURRENT  1
-#define BROTLI_ABI_REVISION 9
-#define BROTLI_ABI_AGE      0
+#define BROTLI_ABI_CURRENT  2
+#define BROTLI_ABI_REVISION 0
+#define BROTLI_ABI_AGE      1
+
+#if BROTLI_VERSION_MAJOR != (BROTLI_ABI_CURRENT - BROTLI_ABI_AGE)
+#error ABI/API version inconsistency
+#endif
+
+#if BROTLI_VERSION_MINOR != BROTLI_ABI_AGE
+#error ABI/API version inconsistency
+#endif
+
+#if BROTLI_VERSION_PATCH != BROTLI_ABI_REVISION
+#error ABI/API version inconsistency
+#endif
 
 #endif  /* BROTLI_COMMON_VERSION_H_ */
diff --git a/scripts/libbrotlidec.pc.in b/scripts/libbrotlidec.pc.in
index 6f8ef2e..ecb8f46 100644
--- a/scripts/libbrotlidec.pc.in
+++ b/scripts/libbrotlidec.pc.in
@@ -8,5 +8,5 @@ URL: https://github.com/google/brotli
 Description: Brotli decoder library
 Version: @PACKAGE_VERSION@
 Libs: -L${libdir} -lbrotlidec
-Requires.private: libbrotlicommon >= 1.0.2
+Requires.private: libbrotlicommon >= 1.1.0
 Cflags: -I${includedir}
diff --git a/scripts/libbrotlienc.pc.in b/scripts/libbrotlienc.pc.in
index 2098afe..5bedb2f 100644
--- a/scripts/libbrotlienc.pc.in
+++ b/scripts/libbrotlienc.pc.in
@@ -8,5 +8,5 @@ URL: https://github.com/google/brotli
 Description: Brotli encoder library
 Version: @PACKAGE_VERSION@
 Libs: -L${libdir} -lbrotlienc
-Requires.private: libbrotlicommon >= 1.0.2
+Requires.private: libbrotlicommon >= 1.1.0
 Cflags: -I${includedir}