diff --git a/build.gradle.kts b/build.gradle.kts
index fceffae6e..a40009056 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -80,7 +80,14 @@ version = finalRevision
 val javaVersion = "21"
 val junitVersion = "5.10.2"
 val mockitoVersion = "5.11.0"
-val mockBukkitVersion = "v1.21-SNAPSHOT"
+// Pin to a concrete JitPack tag rather than the v1.21-SNAPSHOT pointer.
+// SNAPSHOT resolution on JitPack is flaky — it sometimes advertises a
+// timestamped version in maven-metadata.xml whose corresponding .pom 404s,
+// breaking dependency resolution mid-build. Newer tags (>= v4.111) also
+// currently fail to build on JitPack because the project requires a Java 25
+// toolchain that JitPack's default image doesn't have. v4.110.0 is the most
+// recent tag with both POM and JAR available on JitPack.
+val mockBukkitVersion = "v4.110.0"
 val mongodbVersion = "3.12.12"
 val mariadbVersion = "3.0.5"
 val mysqlVersion = "8.0.27"
diff --git a/src/test/java/world/bentobox/bentobox/database/objects/IslandTest.java b/src/test/java/world/bentobox/bentobox/database/objects/IslandTest.java
index 196ae410a..84df874f7 100644
--- a/src/test/java/world/bentobox/bentobox/database/objects/IslandTest.java
+++ b/src/test/java/world/bentobox/bentobox/database/objects/IslandTest.java
@@ -798,6 +798,15 @@ void testSetProtectionRange() {
 
     @Test
     void testSetRange() {
+        // setRange only allows values that disagree with the gamemode's configured
+        // distance-between-islands when the gamemode opts out via
+        // isEnforceEqualRanges()==false. That's the path StrangerRealms uses to grow
+        // claims with team size. Without the opt-out, setRange refuses mismatched
+        // values to prevent silent database corruption (see testSetRangeRefused...).
+        GameModeAddon optOutAddon = mock(GameModeAddon.class);
+        when(optOutAddon.isEnforceEqualRanges()).thenReturn(false);
+        when(iwm.getAddon(any())).thenReturn(Optional.of(optOutAddon));
+
         island.setRange(200);
         assertEquals(200, island.getRange());
     }