diff --git a/build.gradle b/build.gradle
index 3e4cb36..f64dbc3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,6 +48,12 @@ configurations {
 	testRuntimeClasspath.extendsFrom bootstrap
 }
 
+configurations.all {
+	resolutionStrategy {
+		failOnNonReproducibleResolution()
+	}
+}
+
 dependencies {
 	implementation gradleApi()
 
@@ -87,7 +93,27 @@ dependencies {
 	implementation ('org.benf:cfr:0.151')
 
 	// source code remapping
-	implementation ('org.cadixdev:mercury:0.1.0-rc1')
+	implementation ('org.cadixdev:mercury:[0.1.0-rc1]')
+
+	// Mercury pulls all of these deps in, however eclipse does not specify the exact version to use so they can get updated without us knowing.
+	// Depend specifically on these versions to prevent them from being updated under our feet.
+	implementation ('org.eclipse.jdt:org.eclipse.jdt.core:[3.21.0]')
+	implementation ('org.eclipse.platform:org.eclipse.compare.core:[3.6.1000]')
+	implementation ('org.eclipse.platform:org.eclipse.core.commands:[3.9.800]')
+	implementation ('org.eclipse.platform:org.eclipse.core.contenttype:[3.7.900]')
+	implementation ('org.eclipse.platform:org.eclipse.core.expressions:[3.7.100]')
+	implementation ('org.eclipse.platform:org.eclipse.core.filesystem:[1.7.700]')
+	implementation ('org.eclipse.platform:org.eclipse.core.jobs:[3.10.1100]')
+	implementation ('org.eclipse.platform:org.eclipse.core.resources:[3.14.0]')
+	implementation ('org.eclipse.platform:org.eclipse.core.runtime:[3.20.100]')
+	implementation ('org.eclipse.platform:org.eclipse.equinox.app:[1.5.100]')
+	implementation ('org.eclipse.platform:org.eclipse.equinox.common:[3.14.100]')
+	implementation ('org.eclipse.platform:org.eclipse.equinox.preferences:[3.8.200]')
+	implementation ('org.eclipse.platform:org.eclipse.equinox.registry:[3.10.100]')
+	implementation ('org.eclipse.platform:org.eclipse.osgi:[3.16.200]')
+	implementation ('org.eclipse.platform:org.eclipse.team.core:[3.8.1100]')
+	implementation ('org.eclipse.platform:org.eclipse.text:[3.11.0]')
+
 
 	// Kapt integration
 	compileOnly('org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.0')