diff --git a/src/main/java/seedu/address/logic/parser/cca/CcaEnrolCommandParser.java b/src/main/java/seedu/address/logic/parser/cca/CcaEnrolCommandParser.java
index 7e12d6866e6..4d2d848fe45 100644
--- a/src/main/java/seedu/address/logic/parser/cca/CcaEnrolCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/cca/CcaEnrolCommandParser.java
@@ -10,11 +10,12 @@
 import seedu.address.logic.commands.cca.CcaEnrolCommand;
 import seedu.address.logic.parser.ArgumentMultimap;
 import seedu.address.logic.parser.ArgumentTokenizer;
+import seedu.address.logic.parser.Parser;
 import seedu.address.logic.parser.ParserUtil;
 import seedu.address.logic.parser.Prefix;
 import seedu.address.logic.parser.exceptions.ParseException;
 
-public class CcaEnrolCommandParser {
+public class CcaEnrolCommandParser implements Parser<CcaEnrolCommand> {
     /**
      * Parses the given {@code String} of arguments in the context of the CcaEnrolCommand
      * and returns an CcaEnrolCommand object for execution.
diff --git a/src/main/java/seedu/address/logic/parser/cca/CcaExpelCommandParser.java b/src/main/java/seedu/address/logic/parser/cca/CcaExpelCommandParser.java
index fd2cbab0bcc..cb3b475fa5e 100644
--- a/src/main/java/seedu/address/logic/parser/cca/CcaExpelCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/cca/CcaExpelCommandParser.java
@@ -10,11 +10,12 @@
 import seedu.address.logic.commands.cca.CcaExpelCommand;
 import seedu.address.logic.parser.ArgumentMultimap;
 import seedu.address.logic.parser.ArgumentTokenizer;
+import seedu.address.logic.parser.Parser;
 import seedu.address.logic.parser.ParserUtil;
 import seedu.address.logic.parser.Prefix;
 import seedu.address.logic.parser.exceptions.ParseException;
 
-public class CcaExpelCommandParser {
+public class CcaExpelCommandParser implements Parser<CcaExpelCommand> {
     /**
      * Parses the given {@code String} of arguments in the context of the CcaEnrolCommand
      * and returns an CcaEnrolCommand object for execution.