diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 926fc83..14262ea 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-24.04 # ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           submodules: true
 
@@ -37,8 +37,8 @@ jobs:
       - name: Download Eclipse
         run: |
           export ECLIPSE_TAR=eclipse.tar.gz
-          export ECLIPSE_URL=https://www.eclipse.org/downloads/download.php?file=/eclipse/downloads/drops4/R-4.22-202111241800/eclipse-SDK-4.22-linux-gtk-x86_64.tar.gz
-          wget ${ECLIPSE_URL} -O ${ECLIPSE_TAR}
+          export ECLIPSE_URL='https://www.eclipse.org/downloads/download.php?file=/eclipse/downloads/drops4/R-4.38-202512010920/eclipse-SDK-4.38-linux-gtk-x86_64.tar.gz&r=1'
+          wget --progress=dot:giga ${ECLIPSE_URL} -O ${ECLIPSE_TAR}
           tar -C ${GITHUB_WORKSPACE}/.. -xzf ${ECLIPSE_TAR}
 
       - name: Check Eclipse Format
@@ -47,7 +47,7 @@ jobs:
           ant eclipseformat
 
       - name: Checkout AWFY
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: smarr/are-we-fast-yet
           path: are-we-fast-yet
diff --git a/src/som/compiler/Parser.java b/src/som/compiler/Parser.java
index 296ad00..8b4f106 100644
--- a/src/som/compiler/Parser.java
+++ b/src/som/compiler/Parser.java
@@ -87,18 +87,13 @@ public class Parser {
   private String text;
   private Symbol nextSym;
 
-  private static final List<Symbol> singleOpSyms        = new ArrayList<Symbol>();
-  private static final List<Symbol> binaryOpSyms        = new ArrayList<Symbol>();
+  private static final List<Symbol> opSyms              = new ArrayList<Symbol>();
   private static final List<Symbol> keywordSelectorSyms = new ArrayList<Symbol>();
 
   static {
-    for (Symbol s : new Symbol[] {Not, And, Or, Star, Div, Mod, Plus, Equal,
-        More, Less, Comma, At, Per, Minus, NONE}) {
-      singleOpSyms.add(s);
-    }
-    for (Symbol s : new Symbol[] {Or, Comma, Minus, Equal, Not, And, Or, Star,
-        Div, Mod, Plus, Equal, More, Less, Comma, At, Per, NONE}) {
-      binaryOpSyms.add(s);
+    for (Symbol s : new Symbol[] {Or, Comma, Minus, Equal, Not, And, Star,
+        Div, Mod, Plus, More, Less, At, Per, NONE}) {
+      opSyms.add(s);
     }
     for (Symbol s : new Symbol[] {Keyword, KeywordSequence}) {
       keywordSelectorSyms.add(s);
@@ -225,7 +220,7 @@ private void classBody() throws ProgramDefinitionError {
 
   private boolean symIsMethod() {
     return sym == Identifier || sym == Keyword || sym == OperatorSequence
-        || symIn(binaryOpSyms);
+        || symIn(opSyms);
   }
 
   private void superclass() throws ProgramDefinitionError {
@@ -392,7 +387,7 @@ private SSymbol binarySelector() {
     String s = text;
 
     // Checkstyle: stop @formatter:off
-    if (acceptOneOf(singleOpSyms)) {
+    if (acceptOneOf(opSyms)) {
     } else if (accept(OperatorSequence)) {
     } else { expect(NONE); }
     // Checkstyle: resume @formatter:on
@@ -579,19 +574,19 @@ private void messages(final MethodGenerationContext mgenc, boolean superSend)
         superSend = false;
       } while (sym == Identifier);
 
-      while (sym == OperatorSequence || symIn(binaryOpSyms)) {
+      while (sym == OperatorSequence || symIn(opSyms)) {
         binaryMessage(mgenc, false);
       }
 
       if (sym == Keyword) {
         keywordMessage(mgenc, false);
       }
-    } else if (sym == OperatorSequence || symIn(binaryOpSyms)) {
+    } else if (sym == OperatorSequence || symIn(opSyms)) {
       do {
         // only the first message in a sequence can be a super send
         binaryMessage(mgenc, superSend);
         superSend = false;
-      } while (sym == OperatorSequence || symIn(binaryOpSyms));
+      } while (sym == OperatorSequence || symIn(opSyms));
 
       if (sym == Keyword) {
         keywordMessage(mgenc, false);
@@ -662,11 +657,11 @@ private void formula(final MethodGenerationContext mgenc) throws ProgramDefiniti
     boolean superSend = binaryOperand(mgenc);
 
     // only the first message in a sequence can be a super send
-    if (sym == OperatorSequence || symIn(binaryOpSyms)) {
+    if (sym == OperatorSequence || symIn(opSyms)) {
       binaryMessage(mgenc, superSend);
     }
 
-    while (sym == OperatorSequence || symIn(binaryOpSyms)) {
+    while (sym == OperatorSequence || symIn(opSyms)) {
       binaryMessage(mgenc, false);
     }
   }
@@ -824,7 +819,7 @@ private void literalArray(final MethodGenerationContext mgenc) throws ParseError
   }
 
   private SSymbol selector() {
-    if (sym == OperatorSequence || symIn(singleOpSyms)) {
+    if (sym == OperatorSequence || symIn(opSyms)) {
       return binarySelector();
     } else if (sym == Keyword || sym == KeywordSequence) {
       return keywordSelector();
diff --git a/src/som/vmobjects/SNumber.java b/src/som/vmobjects/SNumber.java
index 5be3ff8..ee8084e 100644
--- a/src/som/vmobjects/SNumber.java
+++ b/src/som/vmobjects/SNumber.java
@@ -1,7 +1,6 @@
 package som.vmobjects;
 
 import java.math.BigDecimal;
-import java.math.BigInteger;
 
 import som.vm.Universe;