diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 127b1b0..5fe1f5a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,15 +14,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           check-latest: true
           distribution: temurin
           java-version: ${{ matrix.java }}
       - name: Set up cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-maven-artifacts
         with:
@@ -41,9 +41,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-maven-artifacts
         with:
@@ -58,7 +58,7 @@ jobs:
       # Publish snapshot
       - name: Set up JDK 11 for publishing a snapshot
         if: github.event_name == 'push' && endswith(env.PROJECT_VERSION, 'SNAPSHOT')
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           check-latest: true
           distribution: temurin
@@ -75,7 +75,7 @@ jobs:
       # Publish release
       - name: Set up JDK 11 for publishing a release
         if: github.event_name == 'release' && !endswith(env.PROJECT_VERSION, 'SNAPSHOT')
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           check-latest: true
           distribution: temurin
diff --git a/pom.xml b/pom.xml
index 5ca62bb..c823ee9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.7.16</version>
+    <version>3.4.0</version>
   </parent>
 
   <name>DigitalCollections: Euphoria Streaming Server</name>
@@ -104,7 +104,7 @@
     <dependency>
       <groupId>net.logstash.logback</groupId>
       <artifactId>logstash-logback-encoder</artifactId>
-      <version>7.3</version>
+      <version>8.0</version>
     </dependency>
     <dependency>
       <groupId>nz.net.ultraq.thymeleaf</groupId>