diff --git a/pom.xml b/pom.xml
index a26baf7..cdf5be2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,7 +8,7 @@
   <name>weather</name>
   <inceptionYear>2008</inceptionYear>
   <properties>
-    <scala.version>2.10.4</scala.version>
+    <scala.version>2.9.1</scala.version>
   </properties>
 
   <repositories>