diff --git a/test-project-docker/project/build.properties b/test-project-docker/project/build.properties
index 04267b14a..9edb75b77 100644
--- a/test-project-docker/project/build.properties
+++ b/test-project-docker/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.9
+sbt.version=1.5.4
diff --git a/test-project-jdkpackager/project/build.properties b/test-project-jdkpackager/project/build.properties
index 04267b14a..7c58a83ab 100644
--- a/test-project-jdkpackager/project/build.properties
+++ b/test-project-jdkpackager/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.9
+sbt.version=1.2.6
diff --git a/test-project-simple/project/build.properties b/test-project-simple/project/build.properties
index 04267b14a..7c58a83ab 100644
--- a/test-project-simple/project/build.properties
+++ b/test-project-simple/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.9
+sbt.version=1.2.6
diff --git a/test-project-windows/project/build.properties b/test-project-windows/project/build.properties
index 04267b14a..2e6e3d246 100644
--- a/test-project-windows/project/build.properties
+++ b/test-project-windows/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.9
+sbt.version=1.2.6
\ No newline at end of file