diff --git a/fuzzing/build.gradle.kts b/fuzzing/build.gradle.kts
index 17583d14..89440fc2 100644
--- a/fuzzing/build.gradle.kts
+++ b/fuzzing/build.gradle.kts
@@ -9,7 +9,7 @@ repositories {
 dependencies {
     implementation(project(":sigstore-java"))
     implementation("com.code-intelligence:jazzer-api:0.22.1")
-    implementation("com.google.guava:guava:33.3.0-jre")
+    implementation("com.google.guava:guava:33.3.1-jre")
 }
 
 // copy to the fuzzing builder's output directory. This is an existing directory with
diff --git a/sigstore-cli/build.gradle.kts b/sigstore-cli/build.gradle.kts
index a197bdc1..549a0f1d 100644
--- a/sigstore-cli/build.gradle.kts
+++ b/sigstore-cli/build.gradle.kts
@@ -10,7 +10,7 @@ repositories {
 dependencies {
     implementation(project(":sigstore-java"))
     implementation("info.picocli:picocli:4.7.6")
-    implementation("com.google.guava:guava:33.3.0-jre")
+    implementation("com.google.guava:guava:33.3.1-jre")
 
     implementation(platform("com.google.oauth-client:google-oauth-client-bom:1.36.0"))
     implementation("com.google.oauth-client:google-oauth-client")
diff --git a/sigstore-testkit/build.gradle.kts b/sigstore-testkit/build.gradle.kts
index 1f156f03..5150884b 100644
--- a/sigstore-testkit/build.gradle.kts
+++ b/sigstore-testkit/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 dependencies {
     implementation(project(":sigstore-java"))
     implementation("com.google.code.gson:gson:2.11.0")
-    implementation("com.google.guava:guava:33.3.0-jre")
+    implementation("com.google.guava:guava:33.3.1-jre")
 
     // This is different from typical "testImplementation" dependencies, because
     // testkit exposes junit5 dependencies in its API (e.g. annotations)