diff --git a/src/cocoatweet/exception/credentialNotVerifiedException.h b/src/cocoatweet/exception/credentialNotVerifiedException.h
new file mode 100644
index 0000000..186a1e8
--- /dev/null
+++ b/src/cocoatweet/exception/credentialNotVerifiedException.h
@@ -0,0 +1,12 @@
+#ifndef COCOATWEET_EXCEPTION_CREDENTIALNOTVERIFIEDEXCEPTION_H_
+#define COCOATWEET_EXCEPTION_CREDENTIALNOTVERIFIEDEXCEPTION_H_
+
+#include <cocoatweet/exception/exception.h>
+
+namespace CocoaTweet::Exception {
+class CredentialNotVerifiedException final : public Exception {
+  using Exception::Exception;
+};
+} // namespace CocoaTweet::Exception
+
+#endif
diff --git a/src/cocoatweet/exception/invalidateTokenException.h b/src/cocoatweet/exception/invalidateTokenException.h
new file mode 100644
index 0000000..3ce180e
--- /dev/null
+++ b/src/cocoatweet/exception/invalidateTokenException.h
@@ -0,0 +1,12 @@
+#ifndef COCOATWEET_EXCEPTION_INVALIDATETOKENEXCEPTION_H_
+#define COCOATWEET_EXCEPTION_INVALIDATETOKENEXCEPTION_H_
+
+#include <cocoatweet/exception/exception.h>
+
+namespace CocoaTweet::Exception {
+class InvalidateTokenException final : public Exception {
+  using Exception::Exception;
+};
+} // namespace CocoaTweet::Exception
+
+#endif