diff --git a/Chapter 5/r2dbc-repository-demo/pom.xml b/Chapter 5/r2dbc-repository-demo/pom.xml
index 836ec5493211a41f43e133e746296cc7aae48571..90b062333cedadd239201feefac4b2ab17e4ff31 100644
--- a/Chapter 5/r2dbc-repository-demo/pom.xml	
+++ b/Chapter 5/r2dbc-repository-demo/pom.xml	
@@ -66,7 +66,7 @@
 		<repository>
 			<id>spring-milestone</id>
 			<name>Spring Maven MILESTONE Repository</name>
-			<url>http://repo.spring.io/libs-milestone</url>
+			<url>https://repo.spring.io/libs-milestone</url>
 		</repository>
 	</repositories>
 
diff --git a/Chapter 5/reactive-springbucks/pom.xml b/Chapter 5/reactive-springbucks/pom.xml
index 0fe0b991756811743f71c880e0dd1cbb41d11f27..c09a75d90277b2f20b832c69e764247ca7e31325 100644
--- a/Chapter 5/reactive-springbucks/pom.xml	
+++ b/Chapter 5/reactive-springbucks/pom.xml	
@@ -74,7 +74,7 @@
 		<repository>
 			<id>spring-milestone</id>
 			<name>Spring Maven MILESTONE Repository</name>
-			<url>http://repo.spring.io/libs-milestone</url>
+			<url>https://repo.spring.io/libs-milestone</url>
 		</repository>
 	</repositories>
 
diff --git a/Chapter 5/simple-r2dbc-demo/pom.xml b/Chapter 5/simple-r2dbc-demo/pom.xml
index 062aa94c64f88568c5a91cba21b00a61fa71d9e0..8fa8c979dd754b330db5b2e5f62cb45cc1360356 100644
--- a/Chapter 5/simple-r2dbc-demo/pom.xml	
+++ b/Chapter 5/simple-r2dbc-demo/pom.xml	
@@ -66,7 +66,7 @@
 		<repository>
 			<id>spring-milestone</id>
 			<name>Spring Maven MILESTONE Repository</name>
-			<url>http://repo.spring.io/libs-milestone</url>
+			<url>https://repo.spring.io/libs-milestone</url>
 		</repository>
 	</repositories>
 
diff --git a/Chapter 8/webflux-waiter-service/pom.xml b/Chapter 8/webflux-waiter-service/pom.xml
index 9292cfd9944add20474b076c5682b530809f14d8..9d449423fb4d6c1ecc79202b74273ef4868ba06d 100644
--- a/Chapter 8/webflux-waiter-service/pom.xml	
+++ b/Chapter 8/webflux-waiter-service/pom.xml	
@@ -68,7 +68,7 @@
 		<repository>
 			<id>spring-milestone</id>
 			<name>Spring Maven MILESTONE Repository</name>
-			<url>http://repo.spring.io/libs-milestone</url>
+			<url>https://repo.spring.io/libs-milestone</url>
 		</repository>
 	</repositories>