diff --git a/README.md b/README.md
index ef42cbf..a1064a3 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ You will need to make the following adjustments to your build:
 ### project/build.properties
 
 ```scala
-sbt.version=1.5.5
+sbt.version=1.5.6
 ```
 
 You must use sbt 1.5.5 or newer; older versions of sbt are not supported.
diff --git a/project/build.properties b/project/build.properties
index 10fd9ee..bb3a9b7 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.5.5
+sbt.version=1.5.6