diff --git a/SOPE/GDLContentStore/ChangeLog b/SOPE/GDLContentStore/ChangeLog
index fda01529f..d570302cb 100644
--- a/SOPE/GDLContentStore/ChangeLog
+++ b/SOPE/GDLContentStore/ChangeLog
@@ -1,3 +1,9 @@
+2011-05-30  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
+
+	* GCSFolder.m (-lastModificationDate): new method that returns the
+	last modification date based on the higher value of the
+	"c_lastmodified" column.
+
 2010-12-30  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
 	* EOQualifier+GCS.m (_appendNotQualifier:toString:): new method
diff --git a/SOPE/GDLContentStore/GCSFolder.h b/SOPE/GDLContentStore/GCSFolder.h
index b1370b6e2..d10185a7e 100644
--- a/SOPE/GDLContentStore/GCSFolder.h
+++ b/SOPE/GDLContentStore/GCSFolder.h
@@ -140,6 +140,8 @@
 
 - (unsigned int) recordsCountByExcludingDeleted: (BOOL) includeDeleted;
 
+- (NSCalendarDate *) lastModificationDate;
+
 @end
 
 #endif /* __GDLContentStore_GCSFolder_H__ */
diff --git a/SOPE/GDLContentStore/GCSFolder.m b/SOPE/GDLContentStore/GCSFolder.m
index 4b26a124a..95eca6f52 100644
--- a/SOPE/GDLContentStore/GCSFolder.m
+++ b/SOPE/GDLContentStore/GCSFolder.m
@@ -1368,6 +1368,36 @@ static NSArray *contentFieldNames = nil;
   return count;
 }
 
+- (NSCalendarDate *) lastModificationDate
+{
+  NSArray *records;
+  EOFetchSpecification *lmSpec;
+  EOSortOrdering *ordering;
+  NSNumber *lastModified;
+  NSCalendarDate *lastModificationDate = nil;
+
+  ordering = [EOSortOrdering sortOrderingWithKey: @"c_lastmodified"
+                                        selector: EOCompareDescending];
+  lmSpec = [EOFetchSpecification
+                   fetchSpecificationWithEntityName: [self folderName]
+                                          qualifier: nil
+                                      sortOrderings: [NSArray arrayWithObject: ordering]];
+
+  records = [self        fetchFields: [NSArray arrayWithObject: @"c_lastmodified"]
+                  fetchSpecification: lmSpec
+                       ignoreDeleted: NO];
+  if ([records count])
+    {
+      lastModified
+        = [[records objectAtIndex: 0] objectForKey: @"c_lastmodified"];
+      lastModificationDate
+        = [NSCalendarDate dateWithTimeIntervalSince1970:
+                            (NSTimeInterval) [lastModified intValue]];
+    }
+
+  return lastModificationDate;
+}
+
 /* description */
 
 - (NSString *)description {