diff --git a/dbfadd.c b/dbfadd.c
index c5563e4..d51cc85 100644
--- a/dbfadd.c
+++ b/dbfadd.c
@@ -43,7 +43,10 @@ int main(int argc, char **argv)
     }
 
     const int iRecord = DBFGetRecordCount(hDBF);
-
+    
+    SHPDate date;
+    char bool;
+    
     // Loop assigning the new field values.
     for (int i = 0; i < DBFGetFieldCount(hDBF); i++)
     {
@@ -51,7 +54,22 @@ int main(int argc, char **argv)
             DBFWriteNULLAttribute(hDBF, iRecord, i);
         else if (DBFGetFieldInfo(hDBF, i, NULL, NULL, NULL) == FTString)
             DBFWriteStringAttribute(hDBF, iRecord, i, argv[i + 2]);
+        else if (DBFGetFieldInfo(hDBF, i, NULL, NULL, NULL) == FTDate)
+        {
+            if (3 == sscanf(argv[i + 2], "%4d%2d%2d", &date.year, &date.month,
+                            &date.day))
+            {
+                DBFWriteDateAttribute(hDBF, iRecord, i, &date);
+            }
+         }
+        else if (DBFGetFieldInfo(hDBF, i, NULL, NULL, NULL) == FTLogical)
+        {
+            if (1 == sscanf(argv[i + 2], "%c", &bool)) {
+                DBFWriteLogicalAttribute(hDBF, iRecord, i, bool);
+            }
+        }
         else
+            
             DBFWriteDoubleAttribute(hDBF, iRecord, i, atof(argv[i + 2]));
     }
 
diff --git a/dbfcreate.c b/dbfcreate.c
index 45affa0..1fc8e43 100644
--- a/dbfcreate.c
+++ b/dbfcreate.c
@@ -65,6 +65,32 @@ int main(int argc, char **argv)
             }
             i += 3;
         }
+        else if (i < argc - 1 && strcmp(argv[i], "-d") == 0)
+        {
+            const char *field = argv[i + 1];
+            const int width = 8;
+            const int decimals = 0;
+            if (DBFAddField(hDBF, field, FTDate, width, decimals) == -1)
+            {
+                printf("DBFAddField(%s,FTDate,%d,0) failed.\n", field, width);
+                DBFClose(hDBF);
+                return 4;
+            }
+            i += 1;
+        }
+        else if (i < argc - 1 && strcmp(argv[i], "-l") == 0)
+        {
+            const char *field = argv[i + 1];
+            const int width = 1;
+            const int decimals = 0;
+            if (DBFAddField(hDBF, field, FTLogical, width, decimals) == -1)
+            {
+                printf("DBFAddField(%s,FTLogical,%d,0) failed.\n", field, width);
+                DBFClose(hDBF);
+                return 4;
+            }
+            i += 1;
+        }
         else
         {
             printf("Argument incomplete, or unrecognised: %s\n", argv[i]);
diff --git a/tests/expect3.out b/tests/expect3.out
index 1ab8af4..0d89f1d 100644
--- a/tests/expect3.out
+++ b/tests/expect3.out
@@ -31,7 +31,7 @@ Shape:2 (Polygon)  nVertices=4, nParts=1
      (160,150, 0)  
      (180,170, 0)  
      (150,150, 0)  
-Descriptio                     TestInt       TestDouble 
-Square with triangle missing        1           2.50000 
-Smaller triangle                  100        1000.25000 
-(NULL)                         (NULL)            (NULL) 
+Descriptio                     TestInt       TestDouble TestDate TestBool 
+Square with triangle missing        1           2.50000 20241102 T        
+Smaller triangle                  100        1000.25000 20241102 F        
+(NULL)                         (NULL)            (NULL)   (NULL) (NULL)        
diff --git a/tests/test3.sh b/tests/test3.sh
index 8067e58..530b016 100755
--- a/tests/test3.sh
+++ b/tests/test3.sh
@@ -12,16 +12,16 @@ readonly EXPECT="${1:-$SCRIPTDIR/expect3.out}"
 
 {
 "${SHPCREATE:-./shpcreate}" test polygon
-"${DBFCREATE:-./dbfcreate}" test.dbf -s Description 30 -n TestInt 6 0 -n TestDouble 16 5
+"${DBFCREATE:-./dbfcreate}" test.dbf -s Description 30 -n TestInt 6 0 -n TestDouble 16 5 -d TestDate -l TestBool
 
 "${SHPADD:-./shpadd}" test 0 0 100 0 100 100 0 100 0 0 + 20 20 20 30 30 30 20 20
-"${DBFADD:-./dbfadd}" test.dbf "Square with triangle missing" 1.4 2.5
+"${DBFADD:-./dbfadd}" test.dbf "Square with triangle missing" 1.4 2.5 20241102 T
 
 "${SHPADD:-./shpadd}" test 150 150 160 150 180 170 150 150
-"${DBFADD:-./dbfadd}" test.dbf "Smaller triangle" 100 1000.25
+"${DBFADD:-./dbfadd}" test.dbf "Smaller triangle" 100 1000.25 20241102 F
 
 "${SHPADD:-./shpadd}" test 150 150 160 150 180 170 150 150
-"${DBFADD:-./dbfadd}" test.dbf "" "" ""
+"${DBFADD:-./dbfadd}" test.dbf "" "" "" "" ""
 
 "${SHPDUMP:-./shpdump}" test.shp
 "${DBFDUMP:-./dbfdump}" test.dbf