diff --git a/src/class39/Code05_PrintMatrixSpiralOrder.java b/src/class40/Code05_PrintMatrixSpiralOrder.java
similarity index 98%
rename from src/class39/Code05_PrintMatrixSpiralOrder.java
rename to src/class40/Code05_PrintMatrixSpiralOrder.java
index bf9e9f4..cb3f80c 100644
--- a/src/class39/Code05_PrintMatrixSpiralOrder.java
+++ b/src/class40/Code05_PrintMatrixSpiralOrder.java
@@ -1,4 +1,4 @@
-package class39;
+package class40;
 
 public class Code05_PrintMatrixSpiralOrder {
 
diff --git a/src/class39/Code06_RotateMatrix.java b/src/class40/Code06_RotateMatrix.java
similarity index 98%
rename from src/class39/Code06_RotateMatrix.java
rename to src/class40/Code06_RotateMatrix.java
index 7100137..4e9534f 100644
--- a/src/class39/Code06_RotateMatrix.java
+++ b/src/class40/Code06_RotateMatrix.java
@@ -1,4 +1,4 @@
-package class39;
+package class40;
 
 public class Code06_RotateMatrix {
 
diff --git a/src/class39/Code07_ZigZagPrintMatrix.java b/src/class40/Code07_ZigZagPrintMatrix.java
similarity index 98%
rename from src/class39/Code07_ZigZagPrintMatrix.java
rename to src/class40/Code07_ZigZagPrintMatrix.java
index 7c3dc26..3719878 100644
--- a/src/class39/Code07_ZigZagPrintMatrix.java
+++ b/src/class40/Code07_ZigZagPrintMatrix.java
@@ -1,4 +1,4 @@
-package class39;
+package class40;
 
 public class Code07_ZigZagPrintMatrix {
 
diff --git a/src/class39/Code08_PrintStar.java b/src/class40/Code08_PrintStar.java
similarity index 98%
rename from src/class39/Code08_PrintStar.java
rename to src/class40/Code08_PrintStar.java
index a624d54..be7ade3 100644
--- a/src/class39/Code08_PrintStar.java
+++ b/src/class40/Code08_PrintStar.java
@@ -1,4 +1,4 @@
-package class39;
+package class40;
 
 public class Code08_PrintStar {