diff --git a/.blaze/blaze.conf b/.blaze/blaze.conf
new file mode 100644
index 0000000..ee2682c
--- /dev/null
+++ b/.blaze/blaze.conf
@@ -0,0 +1,5 @@
+blaze.dependencies = [
+    "com.fizzed:jne:4.1.1"
+]
+
+java.source.version = 8
\ No newline at end of file
diff --git a/.blaze/blaze.java b/.blaze/blaze.java
new file mode 100644
index 0000000..d476af6
--- /dev/null
+++ b/.blaze/blaze.java
@@ -0,0 +1,90 @@
+import com.fizzed.blaze.Config;
+import com.fizzed.blaze.Contexts;
+import com.fizzed.blaze.Task;
+import com.fizzed.jne.HardwareArchitecture;
+import com.fizzed.jne.JavaHome;
+import com.fizzed.jne.JavaHomeFinder;
+import org.slf4j.Logger;
+
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+
+import static com.fizzed.blaze.Contexts.withBaseDir;
+import static com.fizzed.blaze.Systems.exec;
+import static java.util.Arrays.asList;
+import static java.util.Optional.ofNullable;
+
+public class blaze {
+
+    private final Logger log = Contexts.logger();
+    private final Config config = Contexts.config();
+    private final Path projectDir = withBaseDir("../").toAbsolutePath();
+
+    @Task(order = 1)
+    public void test() throws Exception {
+        final Integer jdkVersion = this.config.value("jdk.version", Integer.class).orNull();
+        final HardwareArchitecture jdkArch = ofNullable(this.config.value("jdk.arch").orNull())
+            .map(HardwareArchitecture::resolve)
+            .orElse(null);
+
+        final long start = System.currentTimeMillis();
+        final JavaHome jdkHome = new JavaHomeFinder()
+            .jdk()
+            .version(jdkVersion)
+            .hardwareArchitecture(jdkArch)
+            .preferredDistributions()
+            .sorted(jdkVersion != null || jdkArch != null)  // sort if any criteria provided
+            .find();
+
+        log.info("");
+        log.info("Detected {} (in {} ms)", jdkHome, (System.currentTimeMillis()-start));
+        log.info("");
+
+        exec("mvn", "clean", "test")
+            .workingDir(this.projectDir)
+            .env("JAVA_HOME", jdkHome.getDirectory().toString())
+            .verbose()
+            .run();
+    }
+
+    @Task(order = 2)
+    public void test_all_jdks() throws Exception {
+        // collect and find all the jdks we will test on
+        final List<JavaHome> jdks = new ArrayList<>();
+        for (int jdkVersion : asList(21, 17, 11, 8)) {
+            jdks.add(new JavaHomeFinder()
+                .jdk()
+                .version(jdkVersion)
+                .preferredDistributions()
+                .sorted()
+                .find());
+        }
+
+        log.info("Detected JDKs:");
+        jdks.forEach(jdk -> log.info("  {}", jdk));
+
+        for (JavaHome jdk : jdks) {
+            try {
+                log.info("");
+                log.info("Using JDK {}", jdk);
+                log.info("");
+
+                exec("mvn", "clean", "test")
+                    .workingDir(this.projectDir)
+                    .env("JAVA_HOME", jdk.getDirectory().toString())
+                    .verbose()
+                    .run();
+            } catch (Exception e) {
+                log.error("");
+                log.error("Failed on JDK " + jdk);
+                log.error("");
+                throw e;
+            }
+        }
+
+        log.info("Success on JDKs:");
+        jdks.forEach(jdk -> log.info("  {}", jdk));
+    }
+
+}
\ No newline at end of file
diff --git a/.blaze/pom.xml b/.blaze/pom.xml
new file mode 100644
index 0000000..cfa9dbe
--- /dev/null
+++ b/.blaze/pom.xml
@@ -0,0 +1,69 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0  http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>blaze</groupId>
+  <artifactId>bigmap-blaze</artifactId>
+  <version>0.0.1</version>
+
+  <!--
+  THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT BY HAND!
+
+  Edit or create a <blaze-script>.conf file, and re-run the generate-maven-project command.
+  -->
+
+  <properties>
+    <maven.compiler.source>8</maven.compiler.source>
+    <maven.compiler.target>8</maven.compiler.target>
+    <maven.install.skip>true</maven.install.skip>
+    <maven.deploy.skip>true</maven.deploy.skip>
+  </properties>
+  <build>
+    <sourceDirectory>${project.basedir}</sourceDirectory>
+  </build>
+  <dependencies>
+    <dependency>
+      <groupId>com.fizzed</groupId>
+      <artifactId>blaze-ivy</artifactId>
+      <version>1.5.0</version>
+    </dependency>
+    <dependency>
+      <groupId>commons-io</groupId>
+      <artifactId>commons-io</artifactId>
+      <version>2.11.0</version>
+    </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+      <version>2.0.7</version>
+    </dependency>
+    <dependency>
+      <groupId>com.typesafe</groupId>
+      <artifactId>config</artifactId>
+      <version>1.3.0</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.ivy</groupId>
+      <artifactId>ivy</artifactId>
+      <version>2.5.2</version>
+    </dependency>
+    <dependency>
+      <groupId>com.fizzed</groupId>
+      <artifactId>blaze-core</artifactId>
+      <version>1.5.0</version>
+    </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+      <version>2.0.7</version>
+    </dependency>
+    <dependency>
+      <groupId>org.zeroturnaround</groupId>
+      <artifactId>zt-exec</artifactId>
+      <version>1.12</version>
+    </dependency>
+    <dependency>
+      <groupId>com.fizzed</groupId>
+      <artifactId>jne</artifactId>
+      <version>4.1.1</version>
+    </dependency>
+  </dependencies>
+</project>
\ No newline at end of file
diff --git a/.github/workflows/java21.yaml b/.github/workflows/java21.yaml
new file mode 100644
index 0000000..05c9642
--- /dev/null
+++ b/.github/workflows/java21.yaml
@@ -0,0 +1,17 @@
+name: Java 21
+on:
+  - push
+  - workflow_dispatch
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Azul JDK 21
+        uses: actions/setup-java@v3
+        with:
+          java-version: 21
+          distribution: 'zulu'
+          cache: 'maven'
+      - name: Test in Maven
+        run: mvn --no-transfer-progress -B test
\ No newline at end of file
diff --git a/.github/workflows/macos-x64.yaml b/.github/workflows/macos-x64.yaml
index d52bc72..4b6beb6 100644
--- a/.github/workflows/macos-x64.yaml
+++ b/.github/workflows/macos-x64.yaml
@@ -4,7 +4,7 @@ on:
   - workflow_dispatch
 jobs:
   build:
-    runs-on: macos-11
+    runs-on: macos-latest
     steps:
       - uses: actions/checkout@v3
       - name: Set up Azul JDK 11
diff --git a/README.md b/README.md
index 2b3d462..5c2794c 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 [![Java 8](https://img.shields.io/github/actions/workflow/status/fizzed/bigmap/java8.yaml?branch=master&label=Java%208&style=flat-square)](https://github.com/fizzed/bigmap/actions/workflows/java8.yaml)
 [![Java 11](https://img.shields.io/github/actions/workflow/status/fizzed/bigmap/java11.yaml?branch=master&label=Java%2011&style=flat-square)](https://github.com/fizzed/bigmap/actions/workflows/java11.yaml)
 [![Java 17](https://img.shields.io/github/actions/workflow/status/fizzed/bigmap/java17.yaml?branch=master&label=Java%2017&style=flat-square)](https://github.com/fizzed/bigmap/actions/workflows/java17.yaml)
+[![Java 21](https://img.shields.io/github/actions/workflow/status/fizzed/bigmap/java21.yaml?branch=master&label=Java%2021&style=flat-square)](https://github.com/fizzed/bigmap/actions/workflows/java21.yaml)
 
 [![Linux x64](https://img.shields.io/github/actions/workflow/status/fizzed/bigmap/java11.yaml?branch=master&label=Linux%20x64&style=flat-square)](https://github.com/fizzed/bigmap/actions/workflows/java11.yaml)
 [![MacOS x64](https://img.shields.io/github/actions/workflow/status/fizzed/bigmap/macos-x64.yaml?branch=master&label=MacOS%20x64&style=flat-square)](https://github.com/fizzed/bigmap/actions/workflows/macos-x64.yaml)
diff --git a/blaze.jar b/blaze.jar
new file mode 100644
index 0000000..5acc29e
Binary files /dev/null and b/blaze.jar differ
diff --git a/pom.xml b/pom.xml
index cf437a1..1447081 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,8 +13,8 @@
     
     <properties>
         <java.version>1.8</java.version>
-        <tokyocabinet.version>0.0.14</tokyocabinet.version>
-        <tkrzw.version>0.0.7</tkrzw.version>
+        <tokyocabinet.version>0.0.15</tokyocabinet.version>
+        <tkrzw.version>0.0.8</tkrzw.version>
     </properties>
 
     <scm>
@@ -43,12 +43,12 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.0.0-M7</version>
+                <version>3.1.2</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-failsafe-plugin</artifactId>
-                <version>3.0.0-M7</version>
+                <version>3.2.1</version>
             </plugin>
         </plugins>
     </build>
@@ -122,7 +122,7 @@
             <dependency>
                 <groupId>org.rocksdb</groupId>
                 <artifactId>rocksdbjni</artifactId>
-                <version>7.8.3</version>
+                <version>8.3.2</version>
             </dependency>
             
             <!-- testing -->
@@ -130,7 +130,7 @@
             <dependency>
                 <groupId>com.fizzed</groupId>
                 <artifactId>crux-util</artifactId>
-                <version>1.0.13</version>
+                <version>1.0.40</version>
             </dependency>
             
             <dependency>
@@ -145,24 +145,11 @@
                 <version>2.0.0.0</version>
             </dependency>
 
-            <!--<dependency>
-                <groupId>junit</groupId>
-                <artifactId>junit</artifactId>
-                <version>4.13.1</version>
-            </dependency>-->
-
             <dependency>
                 <groupId>org.junit.jupiter</groupId>
                 <artifactId>junit-jupiter</artifactId>
                 <version>5.8.1</version>
             </dependency>
-
-            <!-- only if junit4 is present -->
-            <!--<dependency>
-                <groupId>org.junit.vintage</groupId>
-                <artifactId>junit-vintage-engine</artifactId>
-                <version>5.8.1</version>
-            </dependency>-->
             
             <dependency>
                 <groupId>org.mockito</groupId>