diff --git a/pom.xml b/pom.xml
index 984eaa063c..1ba9e02a1f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,7 +27,7 @@ The MIT License (MIT)
   <parent>
     <groupId>com.jcabi</groupId>
     <artifactId>parent</artifactId>
-    <version>0.49.4</version>
+    <version>0.50.0</version>
   </parent>
   <groupId>org.cactoos</groupId>
   <artifactId>cactoos</artifactId>
@@ -81,6 +81,9 @@ The MIT License (MIT)
       <url>https://github.com/yegor256/cactoos</url>
     </site>
   </distributionManagement>
+  <properties>
+    <junit-platform.version>5.6.2</junit-platform.version>
+  </properties>
   <dependencies>
     <dependency>
       <groupId>org.takes</groupId>
@@ -110,19 +113,34 @@ The MIT License (MIT)
         </exclusion>
       </exclusions>
     </dependency>
+    <!--
+     @todo #1411:30min Migrate existing tests to JUnit 5. It mainly means
+      changing the imports and move from Ignore to Disabled annotation as
+      well as replace rules with corresponding annotations. Once this is done
+      remove the dependencies below.
+    -->
+    <dependency>
+      <groupId>org.junit.vintage</groupId>
+      <artifactId>junit-vintage-engine</artifactId>
+      <version>${junit-platform.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.13</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.hamcrest</groupId>
+      <artifactId>hamcrest-core</artifactId>
+      <version>1.3</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
   <build>
     <pluginManagement>
       <plugins>
-        <plugin>
-          <artifactId>maven-compiler-plugin</artifactId>
-          <version>3.8.0</version>
-          <configuration>
-            <source>1.8</source>
-            <target>1.8</target>
-            <useIncrementalCompilation>false</useIncrementalCompilation>
-          </configuration>
-        </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-verifier-plugin</artifactId>
@@ -141,14 +159,15 @@ The MIT License (MIT)
           </executions>
         </plugin>
         <plugin>
-          <groupId>com.googlecode.maven-download-plugin</groupId>
-          <artifactId>download-maven-plugin</artifactId>
-          <version>1.4.2</version>
-        </plugin>
-        <plugin>
-          <groupId>org.codehaus.mojo</groupId>
-          <artifactId>exec-maven-plugin</artifactId>
-          <version>1.6.0</version>
+          <artifactId>maven-site-plugin</artifactId>
+          <version>3.9.1</version>
+          <dependencies>
+            <dependency>
+              <groupId>org.apache.maven.doxia</groupId>
+              <artifactId>doxia-module-markdown</artifactId>
+              <version>1.9.1</version>
+            </dependency>
+          </dependencies>
         </plugin>
       </plugins>
     </pluginManagement>
@@ -158,13 +177,6 @@ The MIT License (MIT)
         <artifactId>maven-verifier-plugin</artifactId>
       </plugin>
     </plugins>
-    <extensions>
-      <extension>
-        <groupId>kr.motd.maven</groupId>
-        <artifactId>os-maven-plugin</artifactId>
-        <version>1.6.1</version>
-      </extension>
-    </extensions>
   </build>
   <profiles>
     <profile>
@@ -217,7 +229,7 @@ The MIT License (MIT)
           <plugin>
             <groupId>org.jacoco</groupId>
             <artifactId>jacoco-maven-plugin</artifactId>
-            <version>0.8.0</version>
+            <version>0.8.5</version>
             <configuration>
               <output>file</output>
             </configuration>
@@ -283,32 +295,6 @@ The MIT License (MIT)
               </execution>
             </executions>
           </plugin>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.0.0</version>
-            <configuration>
-              <tags>
-                <tag>
-                  <name>todo</name>
-                  <placement>X</placement>
-                </tag>
-                <tag>
-                  <name>checkstyle</name>
-                  <placement>X</placement>
-                </tag>
-              </tags>
-            </configuration>
-            <executions>
-              <execution>
-                <id>javadoc-generate</id>
-                <phase>test</phase>
-                <goals>
-                  <goal>javadoc</goal>
-                </goals>
-              </execution>
-            </executions>
-          </plugin>
         </plugins>
       </build>
     </profile>
@@ -332,36 +318,5 @@ The MIT License (MIT)
         </plugins>
       </build>
     </profile>
-    <profile>
-      <id>jcabi-gpg</id>
-      <activation>
-        <property>
-          <name>gpg.keyname</name>
-        </property>
-      </activation>
-      <build>
-        <plugins>
-          <plugin>
-            <artifactId>maven-gpg-plugin</artifactId>
-            <version>1.6</version>
-            <executions>
-              <execution>
-                <id>jcabi-sign-artifacts</id>
-                <phase>verify</phase>
-                <goals>
-                  <goal>sign</goal>
-                </goals>
-                <configuration combine.self="override">
-                  <gpgArguments>
-                    <arg>--pinentry-mode</arg>
-                    <arg>loopback</arg>
-                  </gpgArguments>
-                </configuration>
-              </execution>
-            </executions>
-          </plugin>
-        </plugins>
-      </build>
-    </profile>
   </profiles>
 </project>
diff --git a/src/test/java/org/cactoos/map/NoNullsTest.java b/src/test/java/org/cactoos/map/NoNullsTest.java
index 01e2eb32d8..313a518c57 100644
--- a/src/test/java/org/cactoos/map/NoNullsTest.java
+++ b/src/test/java/org/cactoos/map/NoNullsTest.java
@@ -30,9 +30,9 @@
 import org.hamcrest.core.AllOf;
 import org.hamcrest.core.IsEqual;
 import org.junit.Ignore;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.rules.ExpectedException;
+import org.llorllale.cactoos.matchers.Assertion;
+import org.llorllale.cactoos.matchers.Throws;
 
 /**
  * Test case for {@link NoNulls}.
@@ -50,12 +50,6 @@
 )
 public final class NoNullsTest {
 
-    /**
-     * A rule for handling an exception.
-     */
-    @Rule
-    public final ExpectedException exception = ExpectedException.none();
-
     @Test
     public void getSize() {
         MatcherAssert.assertThat(
@@ -374,27 +368,33 @@ public void entrySet() {
 
     @Test
     public void putThrowsErrorIfValueNull() {
-        this.exception.expect(IllegalStateException.class);
-        this.exception.expectMessage(
-            "Value at #put(1,V) is NULL"
-        );
-        new NoNulls<Integer, Integer>(
-            new HashMap<>()
-        ).put(1, null);
+        new Assertion<>(
+            "Should throws an error if value is null",
+            () -> new NoNulls<Integer, Integer>(
+                new HashMap<>()
+            ).put(1, null),
+            new Throws<>(
+                "Value at #put(1,V) is NULL",
+                IllegalStateException.class
+            )
+        ).affirm();
     }
 
     @Test
     public void putThrowsErrorIfPreviousValueNull() {
-        this.exception.expect(IllegalStateException.class);
-        this.exception.expectMessage(
-            "Value returned by #put(1,2) is NULL"
-        );
-        new NoNulls<>(
-            new HashMap<Integer, Integer>() {
-                {
-                    put(1, null);
+        new Assertion<>(
+            "Should throws an error if previous value is null",
+            () -> new NoNulls<>(
+                new HashMap<Integer, Integer>() {
+                    {
+                        put(1, null);
+                    }
                 }
-            }
-        ).put(1, 2);
+            ).put(1, 2),
+            new Throws<>(
+                "Value returned by #put(1,2) is NULL",
+                IllegalStateException.class
+            )
+        ).affirm();
     }
 }