diff --git a/.github/workflows/mvn.yml b/.github/workflows/mvn.yml
index fe16415d..073b0a3c 100644
--- a/.github/workflows/mvn.yml
+++ b/.github/workflows/mvn.yml
@@ -10,7 +10,7 @@ name: mvn
 jobs:
   maven-build:
     runs-on: ${{ matrix.os }}
-    timeout-minutes: 60
+    timeout-minutes: 180
     strategy:
       matrix:
         os: [ubuntu-22.04, windows-latest, macos-latest]
diff --git a/src/main/java/org/jpeek/calculus/java/Ccm.java b/src/main/java/org/jpeek/calculus/java/Ccm.java
index daf54394..6708cc91 100644
--- a/src/main/java/org/jpeek/calculus/java/Ccm.java
+++ b/src/main/java/org/jpeek/calculus/java/Ccm.java
@@ -242,6 +242,7 @@ private static String getParent(final String node, final Map<String, String> par
             while (!parents.get(ancestor).equals(ancestor)) {
                 ancestor = parents.get(ancestor);
             }
+            parents.put(node, ancestor);
             return ancestor;
         }