diff --git a/.travis.yml b/.travis.yml
index e498801..8a6229f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,6 @@ cache:
 
 jobs:
   include:
-    - jdk: openjdk8
     - jdk: openjdk11
       env: PATH=$PATH:. VAULT_VERSION=1.7.0 ANALYSIS=true
     - jdk: openjdk16
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a82c3e8..08a6504 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## unreleased
+
+### Breaking
+* Requires Java 11 or later
+
+### Improvements
+* Use pre-sized map objects for fixed-size payloads
+* Remove Apache HTTP Client dependency in favor of Java 11 HTTP
+
+
 ## 0.9.3 (2021-04-02)
 
 ### Improvements
diff --git a/pom.xml b/pom.xml
index 7917544..7ffa9ca 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>de.stklcode.jvault</groupId>
     <artifactId>jvault-connector</artifactId>
-    <version>0.9.3</version>
+    <version>1.0.0-SNAPSHOT</version>
 
     <packaging>jar</packaging>
 
@@ -52,8 +52,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.8.1</version>
                 <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
+                    <source>11</source>
+                    <target>11</target>
                 </configuration>
             </plugin>
         </plugins>
@@ -202,7 +202,7 @@
                         <artifactId>maven-javadoc-plugin</artifactId>
                         <version>3.2.0</version>
                         <configuration>
-                            <source>1.8</source>
+                            <source>11</source>
                         </configuration>
                         <executions>
                             <execution>
@@ -307,26 +307,6 @@
             </build>
         </profile>
 
-        <profile>
-            <id>jdk1.8</id>
-            <activation>
-                <jdk>1.8</jdk>
-            </activation>
-            <build>
-                <pluginManagement>
-                    <plugins>
-                        <plugin>
-                            <groupId>org.apache.maven.plugins</groupId>
-                            <artifactId>maven-surefire-plugin</artifactId>
-                            <configuration>
-                                <argLine>@{argLine}</argLine>
-                            </configuration>
-                        </plugin>
-                    </plugins>
-                </pluginManagement>
-            </build>
-        </profile>
-
         <profile>
             <id>sonatype</id>
             <distributionManagement>