diff --git a/scripts/contributors.sh b/scripts/contributors.sh
index 6a6d344841..e9b4269689 100755
--- a/scripts/contributors.sh
+++ b/scripts/contributors.sh
@@ -34,7 +34,7 @@ if test "$start" = "-h"; then
     exit
 fi
 if test -z "$start"; then
-    start=`git tag --sort=taggerdate | tail -1`;
+    start=`git tag --sort=taggerdate | grep "^curl-" | tail -1`;
     echo "Since $start:"
 fi
 
diff --git a/scripts/contrithanks.sh b/scripts/contrithanks.sh
index 641259216c..0d16a3b90d 100755
--- a/scripts/contrithanks.sh
+++ b/scripts/contrithanks.sh
@@ -33,7 +33,7 @@ if test "$start" = "-h"; then
   exit
 fi
 if test -z "$start"; then
-  start=`git tag --sort=taggerdate | tail -1`;
+  start=`git tag --sort=taggerdate | grep "^curl-" | tail -1`;
 fi
 
 
diff --git a/scripts/delta b/scripts/delta
index 4b8a089150..f3781212b8 100755
--- a/scripts/delta
+++ b/scripts/delta
@@ -35,7 +35,7 @@ if($start eq "-h") {
     exit;
 }
 elsif($start eq "") {
-    $start = `git tag --sort=taggerdate | tail -1`;
+    $start = `git tag --sort=taggerdate | grep "^curl-" | tail -1`;
     chomp $start;
 }