diff --git a/src/tests/testinput/hofx_profiles_2var_writer.yaml b/src/tests/testinput/hofx_profiles_2var_writer.yaml
index 7d9e30f..79ba0b9 100644
--- a/src/tests/testinput/hofx_profiles_2var_writer.yaml
+++ b/src/tests/testinput/hofx_profiles_2var_writer.yaml
@@ -1,5 +1,6 @@
-window begin: 2021-06-29T12:00:00Z
-window end: 2021-06-30T12:00:00Z
+time window:
+  begin: 2021-06-29T12:00:00Z
+  end: 2021-06-30T12:00:00Z
 observations:
   - obs space:
       name: Sea Temperature
diff --git a/src/tests/testinput/hofx_profiles_writer.yaml b/src/tests/testinput/hofx_profiles_writer.yaml
index 0bafc2d..ac117e8 100644
--- a/src/tests/testinput/hofx_profiles_writer.yaml
+++ b/src/tests/testinput/hofx_profiles_writer.yaml
@@ -1,5 +1,6 @@
-window begin: 2021-06-29T12:00:00Z
-window end: 2021-06-30T12:00:00Z
+time window:
+  begin: 2021-06-29T12:00:00Z
+  end: 2021-06-30T12:00:00Z
 observations:
   - obs space:
       name: Sea Temperature
diff --git a/src/tests/testinput/hofx_sic_writer.yaml b/src/tests/testinput/hofx_sic_writer.yaml
index d79c823..e5d87a8 100644
--- a/src/tests/testinput/hofx_sic_writer.yaml
+++ b/src/tests/testinput/hofx_sic_writer.yaml
@@ -1,5 +1,6 @@
-window begin: 2021-06-28T12:00:00Z
-window end: 2021-06-30T12:00:00Z
+time window:
+  begin: 2021-06-28T12:00:00Z
+  end: 2021-06-30T12:00:00Z
 observations:
   - obs space:
       name: Sea Ice
diff --git a/src/tests/testinput/hofx_two_vars_writer.yaml b/src/tests/testinput/hofx_two_vars_writer.yaml
index 02f5282..83a1f18 100644
--- a/src/tests/testinput/hofx_two_vars_writer.yaml
+++ b/src/tests/testinput/hofx_two_vars_writer.yaml
@@ -1,5 +1,6 @@
-window begin: 2021-06-29T21:00:00Z
-window end: 2021-06-30T21:00:00Z
+time window:
+  begin: 2021-06-29T21:00:00Z
+  end: 2021-06-30T21:00:00Z
 observations:
   - obs space:
       name: Sea Ice