diff --git a/6502/C64/src/vf-head-c16.fth b/6502/C64/src/vf-head-c16.fth
index 5dc0cd6..2542313 100644
--- a/6502/C64/src/vf-head-c16.fth
+++ b/6502/C64/src/vf-head-c16.fth
@@ -28,5 +28,5 @@ here dup origin!
 $100 allot
 
 Create logo
- (C16+ ," volksFORTH-83 3.90-C16+ " )
- (C16- ," volksFORTH-83 3.90-C16- " )
+ (C16+ ," volksFORTH-83 3.91-C16+ " )
+ (C16- ," volksFORTH-83 3.91-C16- " )
diff --git a/6502/C64/src/vf-head-c64.fth b/6502/C64/src/vf-head-c64.fth
index 89d2cc1..45159b6 100644
--- a/6502/C64/src/vf-head-c64.fth
+++ b/6502/C64/src/vf-head-c64.fth
@@ -28,4 +28,4 @@ here dup origin!
 $100 allot
 
 Create logo
-  ," volksFORTH-83 3.90-C64  "
+  ," volksFORTH-83 3.91-C64  "
diff --git a/6502/C64/src/vf-head-x16.fth b/6502/C64/src/vf-head-x16.fth
index e1c2b7a..9503a1d 100644
--- a/6502/C64/src/vf-head-x16.fth
+++ b/6502/C64/src/vf-head-x16.fth
@@ -27,4 +27,4 @@ here dup origin!
 $100 allot
 
 Create logo
-  ," volksFORTH-83 3.90-X16  "
+  ," volksFORTH-83 3.91-X16  "