diff --git a/sls-versions/src/main/java/com/palantir/sls/versions/ImmutablesStyle.java b/sls-versions/src/main/java/com/palantir/sls/versions/ImmutablesStyle.java
index e0fc16a1..af80bd6a 100644
--- a/sls-versions/src/main/java/com/palantir/sls/versions/ImmutablesStyle.java
+++ b/sls-versions/src/main/java/com/palantir/sls/versions/ImmutablesStyle.java
@@ -28,5 +28,6 @@
         visibility = Value.Style.ImplementationVisibility.PACKAGE,
         overshadowImplementation = true,
         jdkOnly = true,
+        weakInterning = true,
         get = {"get*", "is*"})
 public @interface ImmutablesStyle {}
diff --git a/sls-versions/src/main/java/com/palantir/sls/versions/SlsVersionMatcher.java b/sls-versions/src/main/java/com/palantir/sls/versions/SlsVersionMatcher.java
index bef24950..847603ad 100644
--- a/sls-versions/src/main/java/com/palantir/sls/versions/SlsVersionMatcher.java
+++ b/sls-versions/src/main/java/com/palantir/sls/versions/SlsVersionMatcher.java
@@ -34,7 +34,7 @@
  * An SLS version matcher as defined by the [SLS
  * spec](https://github.com/palantir/sls-version-java#sls-product-version-specification).
  */
-@Value.Immutable
+@Value.Immutable(intern = true)
 @ImmutablesStyle
 public abstract class SlsVersionMatcher {