diff --git a/checker/src/main/java/org/checkerframework/checker/units/UnitsAnnotatedTypeFactory.java b/checker/src/main/java/org/checkerframework/checker/units/UnitsAnnotatedTypeFactory.java
index 5522cb97916..7e1f0168caa 100644
--- a/checker/src/main/java/org/checkerframework/checker/units/UnitsAnnotatedTypeFactory.java
+++ b/checker/src/main/java/org/checkerframework/checker/units/UnitsAnnotatedTypeFactory.java
@@ -95,10 +95,10 @@ public class UnitsAnnotatedTypeFactory extends BaseAnnotatedTypeFactory {
   private @MonotonicNonNull Map<@CanonicalName String, UnitsRelations> unitsRel;
 
   /** Map from canonical name of external qualifiers, to their Class. */
-  private static final Map<@CanonicalName String, Class<? extends Annotation>> externalQualsMap =
+  private final Map<@CanonicalName String, Class<? extends Annotation>> externalQualsMap =
       new HashMap<>();
 
-  private static final Map<String, AnnotationMirror> aliasMap = new HashMap<>();
+  private final Map<String, AnnotationMirror> aliasMap = new HashMap<>();
 
   @SuppressWarnings("this-escape")
   public UnitsAnnotatedTypeFactory(BaseTypeChecker checker) {
diff --git a/docs/manual/contributors.tex b/docs/manual/contributors.tex
index fc5a6d8872f..6c9d7838e78 100644
--- a/docs/manual/contributors.tex
+++ b/docs/manual/contributors.tex
@@ -38,6 +38,7 @@
 David McArthur,
 Di Wang,
 Dilraj Singh,
+Dimpal Singh,
 Dmitriy Shepelev,
 Eric Spishak,
 Ethan Koenig,