diff --git a/rascal-lsp/pom.xml b/rascal-lsp/pom.xml
index d2ac18f1e..a9bd096fe 100644
--- a/rascal-lsp/pom.xml
+++ b/rascal-lsp/pom.xml
@@ -33,7 +33,7 @@
   <version>2.20.2-SNAPSHOT</version>
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <junit.version>5.10.3</junit.version>
+    <junit.version>4.13.1</junit.version>
     <maven-surefire-plugin.version>3.3.0</maven-surefire-plugin.version>
     <log4j2.version>2.23.1</log4j2.version>
     <lsp4j.version>0.23.1</lsp4j.version>
@@ -75,29 +75,10 @@
       <artifactId>typepal</artifactId>
       <version>0.13.1</version>
     </dependency>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-api</artifactId>
-      <version>${junit.version}</version>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.junit.jupiter</groupId>
-      <artifactId>junit-jupiter-engine</artifactId>
-      <version>${junit.version}</version>
-      <scope>test</scope>
-    </dependency>
     <!-- Rascal tests require JUnit 4 -->
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.13.1</version>
-      <scope>test</scope>
-    </dependency>
-    <!-- Required to run JUnit 4 and 5 tests in the same test run -->
-    <dependency>
-      <groupId>org.junit.vintage</groupId>
-      <artifactId>junit-vintage-engine</artifactId>
       <version>${junit.version}</version>
       <scope>test</scope>
     </dependency>
@@ -174,6 +155,13 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
         <version>${maven-surefire-plugin.version}</version>
+        <dependencies>
+          <dependency>
+            <groupId>org.apache.maven.surefire</groupId>
+            <artifactId>surefire-junit47</artifactId>
+            <version>3.3.0</version>
+          </dependency>
+        </dependencies>
     </plugin>
                 <plugin>
                     <groupId>org.rascalmpl</groupId>
diff --git a/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LineColumnOffsetMapTests.java b/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LineColumnOffsetMapTests.java
index 1c507942b..a5f2bcfff 100644
--- a/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LineColumnOffsetMapTests.java
+++ b/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LineColumnOffsetMapTests.java
@@ -28,19 +28,19 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 import org.rascalmpl.vscode.lsp.util.locations.LineColumnOffsetMap;
 import org.rascalmpl.vscode.lsp.util.locations.impl.ArrayLineOffsetMap;
 
 public class LineColumnOffsetMapTests {
     @Test
-    void noUnicodeChars() {
+    public void noUnicodeChars() {
         LineColumnOffsetMap map = ArrayLineOffsetMap.build("1234\n1234");
         assertEquals(2, map.translateColumn(0, 2, false));
     }
 
     @Test
-    void singleWideChar() {
+    public void singleWideChar() {
         LineColumnOffsetMap map = ArrayLineOffsetMap.build("12🎉45\n1234🎉");
         assertEquals(3, map.translateColumn(0, 3, false));
         assertEquals(4, map.translateColumn(0, 3, true));
@@ -49,7 +49,7 @@ void singleWideChar() {
 
 
     @Test
-    void doubleChars() {
+    public void doubleChars() {
         LineColumnOffsetMap map = ArrayLineOffsetMap.build("12🎉4🎉6\n1234");
         assertEquals(6, map.translateColumn(0, 5, false));
         assertEquals(7, map.translateColumn(0, 5, true));
@@ -57,13 +57,13 @@ void doubleChars() {
     }
 
     @Test
-    void noUnicodeCharsInverse() {
+    public void noUnicodeCharsInverse() {
         LineColumnOffsetMap map = ArrayLineOffsetMap.build("1234\n1234");
         assertEquals(2, map.translateInverseColumn(0, 2, false));
     }
 
     @Test
-    void singleWideCharInverse() {
+    public void singleWideCharInverse() {
         LineColumnOffsetMap map = ArrayLineOffsetMap.build("12🎉45\n1234🎉");
         assertEquals(3, map.translateInverseColumn(0, 3, false));
         assertEquals(3, map.translateInverseColumn(0, 4, false));
@@ -72,7 +72,7 @@ void singleWideCharInverse() {
 
 
     @Test
-    void doubleCharsInverse() {
+    public void doubleCharsInverse() {
         LineColumnOffsetMap map = ArrayLineOffsetMap.build("12🎉4🎉6\n1234");
         assertEquals(5, map.translateInverseColumn(0, 6, false));
         assertEquals(5, map.translateInverseColumn(0, 7, true));
diff --git a/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LookupTests.java b/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LookupTests.java
index ffd6c0a0a..4ed1cc998 100644
--- a/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LookupTests.java
+++ b/rascal-lsp/src/test/java/engineering/swat/rascal/lsp/util/LookupTests.java
@@ -26,13 +26,14 @@
  */
 package engineering.swat.rascal.lsp.util;
 
-import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.Assert.assertSame;
+
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Random;
 import org.eclipse.lsp4j.Position;
 import org.eclipse.lsp4j.Range;
-import org.junit.jupiter.api.Test;
+import org.junit.Test;
 import org.rascalmpl.vscode.lsp.util.locations.impl.TreeMapLookup;
 
 public class LookupTests {
@@ -157,7 +158,7 @@ public void randomRanges() {
         ranges.forEach(target::put);
         for (var e: ranges.entrySet()) {
             var found = target.lookup(e.getKey());
-            assertSame(e.getValue(), found, "Entry " + e + "should be found");
+            assertSame("Entry " + e + "should be found", e.getValue(), found);
         }
     }