diff --git a/.github/workflows/test-build-push.yml b/.github/workflows/test-build-push.yml
index cd1804bb..383c69d0 100644
--- a/.github/workflows/test-build-push.yml
+++ b/.github/workflows/test-build-push.yml
@@ -50,6 +50,7 @@ jobs:
             "snaphu>=0.4.0" \
             "opera-utils>=0.4.1" \
             git+https://github.com/isce-framework/tophu@main \
+          pip install git+https://github.com/isce-framework/spurt@main \
             git+https://github.com/isce-framework/whirlwind@40defb38d2d6deca2819934788ebbc57e418e32d
           pip install --no-deps .
       - name: Install test dependencies
diff --git a/src/dolphin/unwrap/_unwrap_3d.py b/src/dolphin/unwrap/_unwrap_3d.py
index 5e6c316b..eeccae43 100644
--- a/src/dolphin/unwrap/_unwrap_3d.py
+++ b/src/dolphin/unwrap/_unwrap_3d.py
@@ -5,7 +5,7 @@
 
 import numpy as np
 import rasterio as rio
-from opera_utils import get_dates
+from opera_utils import get_dates, sort_files_by_date
 from rasterio.windows import Window
 from scipy import ndimage, signal
 
@@ -87,7 +87,7 @@ def unwrap_spurt(
     elif len(ifg_filenames) == len(g_time.links):
         logger.info("Using pre-formed nearest 3 interferograms")
         stack = IfgStackReader(
-            ifg_filenames=ifg_filenames,
+            ifg_filenames=sort_files_by_date(ifg_filenames)[0],
             quality_file=temporal_coherence_file,
             threshold=options.temporal_coherence_threshold,
         )