diff --git a/tests/update_results.py b/tests/update_results.py
index c9c0be85dc..64d72d3f27 100755
--- a/tests/update_results.py
+++ b/tests/update_results.py
@@ -56,6 +56,20 @@ for adir in sorted(folders):
     for i in range(35 - sz):
         print('.', end="")
 
+    if adir == 'test_source_file':
+        # Handle source file test separately since it requires running OpenMC
+        # twice
+        if os.path.exists('results_error.dat'):
+            os.remove('results_error.dat')
+        proc = Popen(['python', 'test_source_file.py', '--exe', openmc_exe],
+                     stderr=STDOUT, stdout=PIPE)
+        returncode = proc.wait()
+        if os.path.exists('results_error.dat'):
+            os.rename('results_error.dat', 'results_true.dat')
+        print(BOLD + OKGREEN + "[OK]" + ENDC)
+        os.chdir('..')
+        continue
+
     # Run openmc
     proc = Popen([openmc_exe], stderr=STDOUT, stdout=PIPE)
     returncode = proc.wait()