diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 9bf9270dd..347f579f0 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -28,6 +28,17 @@ jobs:
         java-version: '8'
         distribution: 'zulu'
         cache: maven
+    # Temporary: janelia-jhdf5 26.10.0-SNAPSHOT is not published anywhere, so build and
+    # install it into ~/.m2 first. Remove once janelia-jhdf5 is released.
+    - name: Check out janelia-jhdf5
+      uses: actions/checkout@v4
+      with:
+        repository: JaneliaSciComp/janelia-jhdf5
+        ref: main
+        path: janelia-jhdf5
+    - name: Install janelia-jhdf5 snapshot
+      working-directory: janelia-jhdf5
+      run: mvn -B -U install -DskipTests -Djacoco.skip=true -Djavacpp.platform=linux-x86_64
     - name: Build with Maven
       run: mvn -P janeliaws clean install
 
diff --git a/modules/Viewer3D/pom.xml b/modules/Viewer3D/pom.xml
index 5b5db29c9..9cf8a15cf 100644
--- a/modules/Viewer3D/pom.xml
+++ b/modules/Viewer3D/pom.xml
@@ -51,9 +51,10 @@
 
         <!-- HDF5 -->
         <dependency>
-            <groupId>ch.systems.cisd</groupId>
-            <artifactId>jhdf5</artifactId>
-            <version>14.12.0</version>
+            <groupId>org.janelia</groupId>
+            <artifactId>janelia-jhdf5</artifactId>
+            <!-- Temporary: remove the explicit version once janelia-jhdf5 is released (use a release version then). -->
+            <version>${janelia-jhdf5.version}</version>
         </dependency>
 
     </dependencies>
diff --git a/pom.xml b/pom.xml
index c0670724f..be110050e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -165,6 +165,9 @@
 
         <janeliaws.maven-enforcer-plugin.version>3.0.0-M2</janeliaws.maven-enforcer-plugin.version>
 
+        <!-- Temporary: remove once janelia-jhdf5 is released (then use the release version). -->
+        <janelia-jhdf5.version>26.10.0-SNAPSHOT</janelia-jhdf5.version>
+
     </properties>
 
     <repositories>
@@ -183,6 +186,14 @@
                 <enabled>false</enabled>
             </snapshots>
         </repository>
+        <!-- Temporary: remove once janelia-jhdf5 is released.
+             org.bytedeco snapshots (javacpp, hdf5) needed by janelia-jhdf5 until they are released. -->
+        <repository>
+            <id>central-portal-snapshots</id>
+            <url>https://central.sonatype.com/repository/maven-snapshots/</url>
+            <releases><enabled>false</enabled></releases>
+            <snapshots><enabled>true</enabled></snapshots>
+        </repository>
     </repositories>
 
     <distributionManagement>