diff --git a/CHANGES b/CHANGES
index 33b4066ef2..fc2e063b75 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+7.1.0-dev.478 | 2024-11-08 18:36:07 +0100
+
+  * Fixed ZAM memory leak when coercing values to "any" (Vern Paxson, Corelight)
+
+  * ci: Remove -b from test_script lines for zam tasks (Arne Welzel, Corelight)
+
 7.1.0-dev.475 | 2024-11-08 15:35:00 +0100
 
   * fixes for ZAM's propagation of control flow information for some degenerate constructs (Vern Paxson, Corelight)
diff --git a/VERSION b/VERSION
index 341098f976..9c05caa52d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-7.1.0-dev.475
+7.1.0-dev.478
diff --git a/src/script_opt/ZAM/OPs/coercions.op b/src/script_opt/ZAM/OPs/coercions.op
index fef6ea8096..9f9af52ebd 100644
--- a/src/script_opt/ZAM/OPs/coercions.op
+++ b/src/script_opt/ZAM/OPs/coercions.op
@@ -128,7 +128,9 @@ eval	if ( $1->Size() > 0 )
 unary-expr-op To-Any-Coerce
 op-type X
 set-type $1
-eval	AssignTarget($$, ZVal($1.ToVal(Z_TYPE), ZAM::any_base_type))
+eval	auto orig_lhs = $$; /* hold in case $$ = $1 */
+	$$ = ZVal($1.ToVal(Z_TYPE), ZAM::any_base_type);
+	ZVal::DeleteManagedType(orig_lhs);
 
 unary-expr-op From-Any-Coerce
 no-const