diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1b632e5531c..3daf0e7f065 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -107,6 +107,7 @@ jobs:
         with:
           name: test-results-${{ matrix.test }}
           path: |
+            key.core/proofs/**        
             **/build/test-results/*/*.xml
             key.core/build/reports/runallproofs/*
             **/build/reports/
diff --git a/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/ProveTest.java b/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/ProveTest.java
index 7ccecc800fb..8c9c8ed5ee6 100644
--- a/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/ProveTest.java
+++ b/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/ProveTest.java
@@ -5,14 +5,18 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.io.PrintWriter;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
+import java.util.zip.GZIPOutputStream;
 
 import de.uka.ilkd.key.control.DefaultUserInterfaceControl;
 import de.uka.ilkd.key.control.KeYEnvironment;
 import de.uka.ilkd.key.nparser.KeyAst;
+import de.uka.ilkd.key.pp.LogicPrinter;
+import de.uka.ilkd.key.proof.Node;
 import de.uka.ilkd.key.proof.Proof;
 import de.uka.ilkd.key.proof.io.AbstractProblemLoader;
 import de.uka.ilkd.key.proof.io.ProblemLoaderException;
@@ -138,6 +142,11 @@ private void runKey(String file, TestProperty testProperty) throws Exception {
                     LOGGER.info("({}) Finished proof: {}", caseId,
                         (closed ? "closed." : "open goal(s)"));
                     appendStatistics(loadedProof, keyFile.toFile());
+
+                    var path = Paths.get("proofs",
+                        loadedProof.getProofFile().getFileName() + ".proof.xml");
+                    saveProofXml(loadedProof, path);
+
                     if (success) {
                         reload(proofFile, loadedProof);
                     }
@@ -162,6 +171,27 @@ private void runKey(String file, TestProperty testProperty) throws Exception {
         }
     }
 
+    public static void saveProofXml(Proof loadedProof, Path path) throws IOException {
+        Files.createDirectories(path.getParent());
+        try (var out = new PrintWriter(new GZIPOutputStream(Files.newOutputStream(path)))) {
+            toXml(out, loadedProof.root());
+        }
+    }
+
+    private static void toXml(PrintWriter out, Node node) {
+        out.format("\n<node label=\"%s\" taclet=\"%s\">", node.getNodeInfo().getBranchLabel(),
+                node.getAppliedRuleApp().rule().name());
+        out.format("\n<raw><![CDATA[%s]]>\n</raw>", node.sequent());
+        out.format("\n<lpr><![CDATA[%s]]>\n</lpr>",
+            LogicPrinter.quickPrintSequent(node.sequent(), node.proof().getServices()));
+        out.format("\n<children>\n");
+        for (Node child : node.children()) {
+            toXml(out, child);
+        }
+        out.format("</children>\n");
+        out.format("</node>\n");
+    }
+
     /**
      * Override this method in order to change reload behaviour.
      */
diff --git a/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/proofcollection/TestFile.java b/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/proofcollection/TestFile.java
index 79df3f4b495..db19af07741 100644
--- a/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/proofcollection/TestFile.java
+++ b/key.core/src/test/java/de/uka/ilkd/key/proof/runallproofs/proofcollection/TestFile.java
@@ -16,6 +16,7 @@
 import de.uka.ilkd.key.proof.io.AbstractProblemLoader.ReplayResult;
 import de.uka.ilkd.key.proof.io.ProblemLoaderException;
 import de.uka.ilkd.key.proof.io.ProofSaver;
+import de.uka.ilkd.key.proof.runallproofs.ProveTest;
 import de.uka.ilkd.key.proof.runallproofs.RunAllProofsTest;
 import de.uka.ilkd.key.proof.runallproofs.TestResult;
 import de.uka.ilkd.key.scripts.ProofScriptEngine;
@@ -166,6 +167,7 @@ public TestResult runKey() throws Exception {
                 loadedProof = env.getLoadedProof();
                 ReplayResult replayResult;
 
+
                 if (testProperty == TestProperty.NOTLOADABLE) {
                     try {
                         replayResult = env.getReplayResult();
@@ -205,6 +207,11 @@ public TestResult runKey() throws Exception {
                         || testProperty == TestProperty.NOTPROVABLE) {
                     ProofSaver.saveToFile(new File(keyFile.toAbsolutePath() + ".save.proof"),
                         loadedProof);
+
+                    var path = Paths.get("proofs",
+                            loadedProof.getProofFile().getFileName() + ".proof.xml.gz");
+                    ProveTest.saveProofXml(loadedProof, path);
+                    LOGGER.info("Stored {}", path);
                 }
                 boolean closed = loadedProof.closed();
                 success = (testProperty == TestProperty.PROVABLE) == closed;