diff --git a/project/build.properties b/project/build.properties
index 40b3b8e7..3c0b78a7 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.0
+sbt.version=1.9.1
diff --git a/src/sbt-test/scoverage/coverage-excluded-files/project/build.properties b/src/sbt-test/scoverage/coverage-excluded-files/project/build.properties
index 40b3b8e7..3c0b78a7 100644
--- a/src/sbt-test/scoverage/coverage-excluded-files/project/build.properties
+++ b/src/sbt-test/scoverage/coverage-excluded-files/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.0
+sbt.version=1.9.1
diff --git a/src/sbt-test/scoverage/coverage-excluded-packages/project/build.properties b/src/sbt-test/scoverage/coverage-excluded-packages/project/build.properties
index 40b3b8e7..3c0b78a7 100644
--- a/src/sbt-test/scoverage/coverage-excluded-packages/project/build.properties
+++ b/src/sbt-test/scoverage/coverage-excluded-packages/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.0
+sbt.version=1.9.1
diff --git a/src/sbt-test/scoverage/coverage-off/project/build.properties b/src/sbt-test/scoverage/coverage-off/project/build.properties
index 40b3b8e7..3c0b78a7 100644
--- a/src/sbt-test/scoverage/coverage-off/project/build.properties
+++ b/src/sbt-test/scoverage/coverage-off/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.0
+sbt.version=1.9.1
diff --git a/src/sbt-test/scoverage/scala3-coverage-excluded-files/project/build.properties b/src/sbt-test/scoverage/scala3-coverage-excluded-files/project/build.properties
index 40b3b8e7..3c0b78a7 100644
--- a/src/sbt-test/scoverage/scala3-coverage-excluded-files/project/build.properties
+++ b/src/sbt-test/scoverage/scala3-coverage-excluded-files/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.0
+sbt.version=1.9.1