diff --git a/plugin/src/sbt-test/sbt-jni/overloads/project/build.properties b/plugin/src/sbt-test/sbt-jni/overloads/project/build.properties
index 72413de..40b3b8e 100644
--- a/plugin/src/sbt-test/sbt-jni/overloads/project/build.properties
+++ b/plugin/src/sbt-test/sbt-jni/overloads/project/build.properties
@@ -1 +1 @@
-sbt.version=1.8.3
+sbt.version=1.9.0
diff --git a/plugin/src/sbt-test/sbt-jni/simple-cargo/project/build.properties b/plugin/src/sbt-test/sbt-jni/simple-cargo/project/build.properties
index 72413de..40b3b8e 100644
--- a/plugin/src/sbt-test/sbt-jni/simple-cargo/project/build.properties
+++ b/plugin/src/sbt-test/sbt-jni/simple-cargo/project/build.properties
@@ -1 +1 @@
-sbt.version=1.8.3
+sbt.version=1.9.0
diff --git a/plugin/src/sbt-test/sbt-jni/simple-syntax/project/build.properties b/plugin/src/sbt-test/sbt-jni/simple-syntax/project/build.properties
index 72413de..40b3b8e 100644
--- a/plugin/src/sbt-test/sbt-jni/simple-syntax/project/build.properties
+++ b/plugin/src/sbt-test/sbt-jni/simple-syntax/project/build.properties
@@ -1 +1 @@
-sbt.version=1.8.3
+sbt.version=1.9.0
diff --git a/plugin/src/sbt-test/sbt-jni/simple/project/build.properties b/plugin/src/sbt-test/sbt-jni/simple/project/build.properties
index 72413de..40b3b8e 100644
--- a/plugin/src/sbt-test/sbt-jni/simple/project/build.properties
+++ b/plugin/src/sbt-test/sbt-jni/simple/project/build.properties
@@ -1 +1 @@
-sbt.version=1.8.3
+sbt.version=1.9.0
diff --git a/project/build.properties b/project/build.properties
index 72413de..40b3b8e 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.8.3
+sbt.version=1.9.0