diff --git a/security/afl++/Makefile b/security/afl++/Makefile
index 9d529aca39e6..8058bd9b3188 100644
--- a/security/afl++/Makefile
+++ b/security/afl++/Makefile
@@ -1,6 +1,6 @@
 PORTNAME=	afl
 DISTVERSIONPREFIX=	v
-DISTVERSION=	4.20c
+DISTVERSION=	4.21c
 CATEGORIES=	security
 PKGNAMESUFFIX=	++-${FLAVOR}
 
diff --git a/security/afl++/distinfo b/security/afl++/distinfo
index ef1c3cfcfe74..5b509c978cb0 100644
--- a/security/afl++/distinfo
+++ b/security/afl++/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1713003825
-SHA256 (AFLplusplus-AFLplusplus-v4.20c_GH0.tar.gz) = 855ddefbe9c88911146c1b7cb50dc5423b7623a7a59343f34f31bf038a865a24
-SIZE (AFLplusplus-AFLplusplus-v4.20c_GH0.tar.gz) = 2997342
+TIMESTAMP = 1718096074
+SHA256 (AFLplusplus-AFLplusplus-v4.21c_GH0.tar.gz) = 11f7c77d37cff6e7f65ac7cc55bab7901e0c6208e845a38764394d04ed567b30
+SIZE (AFLplusplus-AFLplusplus-v4.21c_GH0.tar.gz) = 3004235