diff --git a/lib/with_advisory_lock/concern.rb b/lib/with_advisory_lock/concern.rb
index 0d68983..d64357c 100644
--- a/lib/with_advisory_lock/concern.rb
+++ b/lib/with_advisory_lock/concern.rb
@@ -21,7 +21,7 @@ module ClassMethods
 
       def with_advisory_lock(lock_name, timeout_seconds=nil, &block)
         impl_class = case (connection.adapter_name.downcase)
-          when "postgresql", "empostgresql"
+          when "postgresql", "empostgresql", "postgis"
             WithAdvisoryLock::PostgreSQL
           when "mysql", "mysql2"
             WithAdvisoryLock::MySQL
diff --git a/lib/with_advisory_lock/version.rb b/lib/with_advisory_lock/version.rb
index e2f3f07..52b845d 100644
--- a/lib/with_advisory_lock/version.rb
+++ b/lib/with_advisory_lock/version.rb
@@ -1,3 +1,3 @@
 module WithAdvisoryLock
-  VERSION = "0.0.8"
+  VERSION = "0.0.9"
 end