diff --git a/server/build.gradle.kts b/server/build.gradle.kts
index 5c159b3..8f85049 100644
--- a/server/build.gradle.kts
+++ b/server/build.gradle.kts
@@ -40,5 +40,5 @@ dependencies {
     testImplementation(libs.ktor.serverTestHost)
     testImplementation(libs.kotlin.testJunit)
     // 2.4.240 has an open-session CHECK regression: h2database/h2database#4291.
-    testImplementation("com.h2database:h2:2.3.232")
+    testImplementation("com.h2database:h2:2.5.252")
 }