diff --git a/tests/fixture/failure/info.toml b/tests/fixture/failure/info.toml
index 94ec6ead..ef99a07a 100644
--- a/tests/fixture/failure/info.toml
+++ b/tests/fixture/failure/info.toml
@@ -1,3 +1,5 @@
+format_version = 1
+
 [[exercises]]
 name = "compFailure"
 mode = "run"
diff --git a/tests/fixture/state/info.toml b/tests/fixture/state/info.toml
index e5c4d8f4..eec24ea1 100644
--- a/tests/fixture/state/info.toml
+++ b/tests/fixture/state/info.toml
@@ -1,3 +1,5 @@
+format_version = 1
+
 [[exercises]]
 name = "pending_exercise"
 mode = "run"
diff --git a/tests/fixture/success/info.toml b/tests/fixture/success/info.toml
index 674ba264..88650ecb 100644
--- a/tests/fixture/success/info.toml
+++ b/tests/fixture/success/info.toml
@@ -1,3 +1,5 @@
+format_version = 1
+
 [[exercises]]
 name = "compSuccess"
 mode = "run"