diff --git a/bin/import_final_p111.py b/bin/import_final_p111.py
index ca6b3df..a06c365 100755
--- a/bin/import_final_p111.py
+++ b/bin/import_final_p111.py
@@ -12,6 +12,7 @@ import os
 import sys
 import pathlib
 import re
+import time
 import configuration
 import p111
 from datastore import Datastore
@@ -20,6 +21,7 @@ if __name__ == '__main__':
 
 	print("Reading configuration")
 	surveys = configuration.surveys()
+	file_min_age = configuration.read().get('imports', {}).get('file_min_age', 10)
 
 	print("Connecting to database")
 	db = Datastore()
@@ -49,6 +51,12 @@ if __name__ == '__main__':
 					print(f"Found {filepath}")
 
 					if not db.file_in_db(filepath):
+						
+						age = time.time() - os.path.getmtime(filepath)
+						if age < file_min_age:
+							print("Skipping file because too new", filepath)
+							continue
+						
 						print("Importing")
 
 						match = rx.match(os.path.basename(filepath))
diff --git a/bin/import_final_p190.py b/bin/import_final_p190.py
index e8f948d..278ca31 100755
--- a/bin/import_final_p190.py
+++ b/bin/import_final_p190.py
@@ -12,6 +12,7 @@ import os
 import sys
 import pathlib
 import re
+import time
 import configuration
 import p190
 from datastore import Datastore
@@ -20,6 +21,7 @@ if __name__ == '__main__':
 
 	print("Reading configuration")
 	surveys = configuration.surveys()
+	file_min_age = configuration.read().get('imports', {}).get('file_min_age', 10)
 
 	print("Connecting to database")
 	db = Datastore()
@@ -49,6 +51,12 @@ if __name__ == '__main__':
 					print(f"Found {filepath}")
 
 					if not db.file_in_db(filepath):
+						
+						age = time.time() - os.path.getmtime(filepath)
+						if age < file_min_age:
+							print("Skipping file because too new", filepath)
+							continue
+						
 						print("Importing")
 
 						match = rx.match(os.path.basename(filepath))
diff --git a/bin/import_preplots.py b/bin/import_preplots.py
index 5fb4887..fda9883 100755
--- a/bin/import_preplots.py
+++ b/bin/import_preplots.py
@@ -8,7 +8,9 @@ or modified preplots and (re-)import them into the database.
 """
 
 from glob import glob
+import os
 import sys
+import time
 import configuration
 import preplots
 from datastore import Datastore
@@ -17,6 +19,7 @@ if __name__ == '__main__':
 
 	print("Reading configuration")
 	surveys = configuration.surveys()
+	file_min_age = configuration.read().get('imports', {}).get('file_min_age', 10)
 
 	print("Connecting to database")
 	db = Datastore()
@@ -28,6 +31,12 @@ if __name__ == '__main__':
 		for file in survey["preplots"]:
 			print(f"Preplot: {file['path']}")
 			if not db.file_in_db(file["path"]):
+				
+				age = time.time() - os.path.getmtime(file["path"])
+				if age < file_min_age:
+					print("Skipping file because too new", file["path"])
+					continue
+				
 				print("Importing")
 				try:
 					preplot = preplots.from_file(file)
diff --git a/bin/import_raw_p111.py b/bin/import_raw_p111.py
index e8e781c..8f15c1a 100755
--- a/bin/import_raw_p111.py
+++ b/bin/import_raw_p111.py
@@ -12,6 +12,7 @@ import os
 import sys
 import pathlib
 import re
+import time
 import configuration
 import p111
 from datastore import Datastore
@@ -20,6 +21,7 @@ if __name__ == '__main__':
 
 	print("Reading configuration")
 	surveys = configuration.surveys()
+	file_min_age = configuration.read().get('imports', {}).get('file_min_age', 10)
 
 	print("Connecting to database")
 	db = Datastore()
@@ -57,6 +59,12 @@ if __name__ == '__main__':
 						ntbp = False
 
 					if not db.file_in_db(filepath):
+						
+						age = time.time() - os.path.getmtime(filepath)
+						if age < file_min_age:
+							print("Skipping file because too new", filepath)
+							continue
+						
 						print("Importing")
 
 						match = rx.match(os.path.basename(filepath))
diff --git a/bin/import_raw_p190.py b/bin/import_raw_p190.py
index 4d48c4e..141e5ee 100755
--- a/bin/import_raw_p190.py
+++ b/bin/import_raw_p190.py
@@ -12,6 +12,7 @@ import os
 import sys
 import pathlib
 import re
+import time
 import configuration
 import p190
 from datastore import Datastore
@@ -20,6 +21,7 @@ if __name__ == '__main__':
 
 	print("Reading configuration")
 	surveys = configuration.surveys()
+	file_min_age = configuration.read().get('imports', {}).get('file_min_age', 10)
 
 	print("Connecting to database")
 	db = Datastore()
@@ -52,6 +54,12 @@ if __name__ == '__main__':
 					print(f"Found {filepath}")
 
 					if not db.file_in_db(filepath):
+						
+						age = time.time() - os.path.getmtime(filepath)
+						if age < file_min_age:
+							print("Skipping file because too new", filepath)
+							continue
+						
 						print("Importing")
 
 						match = rx.match(os.path.basename(filepath))
diff --git a/bin/import_smsrc.py b/bin/import_smsrc.py
index f634f6e..a6b7ba8 100755
--- a/bin/import_smsrc.py
+++ b/bin/import_smsrc.py
@@ -12,6 +12,7 @@ import os
 import sys
 import pathlib
 import re
+import time
 import configuration
 import smsrc
 from datastore import Datastore
@@ -20,6 +21,7 @@ if __name__ == '__main__':
 
 	print("Reading configuration")
 	surveys = configuration.surveys()
+	file_min_age = configuration.read().get('imports', {}).get('file_min_age', 10)
 
 	print("Connecting to database")
 	db = Datastore()
@@ -53,6 +55,12 @@ if __name__ == '__main__':
 					print(f"Found {filepath}")
 
 					if not db.file_in_db(filepath):
+						
+						age = time.time() - os.path.getmtime(filepath)
+						if age < file_min_age:
+							print("Skipping file because too new", filepath)
+							continue
+						
 						print("Importing")
 
 						match = rx.match(os.path.basename(filepath))
diff --git a/etc/config.yaml b/etc/config.yaml
index e618201..f943b31 100644
--- a/etc/config.yaml
+++ b/etc/config.yaml
@@ -22,3 +22,9 @@ navigation:
                 # saving routine.
                 epsg: 23031 # Assume this CRS for unqualified E/N data
 
+
+imports:
+    # For a file to be imported, it must have been last modified at
+    # least this many seconds ago.
+    file_min_age: 60
+