diff --git a/pmd-apex-jorje/pom.xml b/pmd-apex-jorje/pom.xml
index 0e384db63b..ebd8bd644f 100644
--- a/pmd-apex-jorje/pom.xml
+++ b/pmd-apex-jorje/pom.xml
@@ -54,12 +54,12 @@
     <dependency>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-classic</artifactId>
-        <version>1.1.7</version>
+        <version>1.2.3</version>
     </dependency>
     <dependency>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-core</artifactId>
-        <version>1.1.7</version>
+        <version>1.2.3</version>
     </dependency>
     <dependency>
         <groupId>com.google.code.findbugs</groupId>
@@ -119,7 +119,7 @@
     <dependency>
         <groupId>org.yaml</groupId>
         <artifactId>snakeyaml</artifactId>
-        <version>1.17</version>
+        <version>1.26</version>
     </dependency>
     <dependency>
         <groupId>aopalliance</groupId>
diff --git a/pmd-doc/pom.xml b/pmd-doc/pom.xml
index 1b4b2dc7c5..4903ec018f 100644
--- a/pmd-doc/pom.xml
+++ b/pmd-doc/pom.xml
@@ -100,7 +100,7 @@
         <dependency>
             <groupId>org.yaml</groupId>
             <artifactId>snakeyaml</artifactId>
-            <version>1.19</version>
+            <version>1.26</version>
         </dependency>
 
         <dependency>
diff --git a/pom.xml b/pom.xml
index 062f361a90..3fb02bb15e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -626,7 +626,7 @@
             <dependency>
                 <groupId>com.beust</groupId>
                 <artifactId>jcommander</artifactId>
-                <version>1.72</version>
+                <version>1.78</version>
             </dependency>
             <dependency>
                 <groupId>org.ow2.asm</groupId>