diff --git a/plugins/jmx-timers/project/build.properties b/plugins/jmx-timers/project/build.properties
index b5ef6fff..dbae93bc 100644
--- a/plugins/jmx-timers/project/build.properties
+++ b/plugins/jmx-timers/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.8
+sbt.version=1.4.9
diff --git a/plugins/ubench-agent/project/build.properties b/plugins/ubench-agent/project/build.properties
index b5ef6fff..dbae93bc 100644
--- a/plugins/ubench-agent/project/build.properties
+++ b/plugins/ubench-agent/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.8
+sbt.version=1.4.9
diff --git a/project/build.properties b/project/build.properties
index b5ef6fff..dbae93bc 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.8
+sbt.version=1.4.9
diff --git a/tools/sbt/bin/sbt b/tools/sbt/bin/sbt
index 27790d38..0fb9ed02 100755
--- a/tools/sbt/bin/sbt
+++ b/tools/sbt/bin/sbt
@@ -12,7 +12,7 @@ declare -a print_sbt_script_version
 declare -a original_args
 declare java_cmd=java
 declare java_version
-declare init_sbt_version=1.4.8
+declare init_sbt_version=1.4.9
 declare sbt_default_mem=1024
 declare -r default_sbt_opts=""
 declare -r default_java_opts="-Dfile.encoding=UTF-8"
diff --git a/tools/sbt/bin/sbt-launch.jar b/tools/sbt/bin/sbt-launch.jar
index f8d57dab..661d5db7 100644
Binary files a/tools/sbt/bin/sbt-launch.jar and b/tools/sbt/bin/sbt-launch.jar differ
diff --git a/tools/sbt/bin/sbt.bat b/tools/sbt/bin/sbt.bat
index 1cc2b3d8..0ade90aa 100644
--- a/tools/sbt/bin/sbt.bat
+++ b/tools/sbt/bin/sbt.bat
@@ -18,7 +18,7 @@ set _JAVACMD=
 set _SBT_OPTS=
 set _JAVA_OPTS=
 
-set init_sbt_version=1.4.8
+set init_sbt_version=1.4.9
 set sbt_default_mem=1024
 set default_sbt_opts=
 set default_java_opts=-Dfile.encoding=UTF-8