diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d9c2be9..fd04967 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,6 +9,12 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        # Experiment: does the project build + test on JDK 22 (first stable FFM)
+        # as well as 25? If 22 is green, the supported floor can drop from 25.
+        java: ['22', '25']
 
     steps:
       - name: Checkout (with zstd submodule)
@@ -16,11 +22,11 @@ jobs:
         with:
           submodules: recursive
 
-      - name: Set up JDK 25
+      - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: '25'
+          java-version: ${{ matrix.java }}
           cache: maven
 
       - name: Set up Zig
diff --git a/pom.xml b/pom.xml
index d5026d6..b9901f3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -50,7 +50,7 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<maven.compiler.release>25</maven.compiler.release>
+		<maven.compiler.release>22</maven.compiler.release>
 		<central-publishing-plugin.version>0.11.0</central-publishing-plugin.version>
 		<maven-gpg-plugin.version>3.2.8</maven-gpg-plugin.version>
 		<maven-source-plugin.version>3.4.0</maven-source-plugin.version>
@@ -164,7 +164,7 @@
 					<artifactId>maven-compiler-plugin</artifactId>
 					<version>3.15.0</version>
 					<configuration>
-						<release>25</release>
+						<release>22</release>
 						<failOnWarning>true</failOnWarning>
 						<compilerArgs>
 							<arg>-Xlint:all</arg>
@@ -176,7 +176,7 @@
 					<artifactId>maven-javadoc-plugin</artifactId>
 					<version>3.12.0</version>
 					<configuration>
-						<release>25</release>
+						<release>22</release>
 						<failOnError>true</failOnError>
 						<failOnWarnings>true</failOnWarnings>
 						<quiet>true</quiet>