1 files changed, 4 insertions, 7 deletions
diff --git a/src/main/java/com/google/devtools/build/skyframe/MinimalVersion.java b/src/main/java/com/google/devtools/build/skyframe/MinimalVersion.java
index 059832c9de..bcf49158b6 100644
--- a/src/main/java/com/google/devtools/build/skyframe/MinimalVersion.java
+++ b/src/main/java/com/google/devtools/build/skyframe/MinimalVersion.java
@@ -13,15 +13,12 @@
 // limitations under the License.
 package com.google.devtools.build.skyframe;
 
-import java.io.Serializable;
-
 /**
- * A Version "less than" all other versions, other than itself.
- *
- * <p>Only use in custom evaluator implementations.
+ * A Version "less than" all other versions, other than itself. Only used as initializer in
+ * node entry.
  */
-public class MinimalVersion implements Version, Serializable {
-  public static final MinimalVersion INSTANCE = new MinimalVersion();
+class MinimalVersion implements Version {
+  static final MinimalVersion INSTANCE = new MinimalVersion();
 
   private MinimalVersion() {
   }