diff --git a/parallel_hashmap/phmap_config.h b/parallel_hashmap/phmap_config.h
index e3e7573..9ab6dfe 100644
--- a/parallel_hashmap/phmap_config.h
+++ b/parallel_hashmap/phmap_config.h
@@ -34,8 +34,8 @@
 // limitations under the License.
 // ---------------------------------------------------------------------------
 
-#define PHMAP_VERSION_MAJOR 0
-#define PHMAP_VERSION_MINOR 9
+#define PHMAP_VERSION_MAJOR 1
+#define PHMAP_VERSION_MINOR 0
 #define PHMAP_VERSION_PATCH 0
 
 // Included for the __GLIBC__ macro (or similar macros on other systems).