diff --git a/configure.ac b/configure.ac
index 8079d98d21d4e..a46fa70a31ac0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1699,7 +1699,8 @@ PHP_INSTALL_HEADERS([Zend/Optimizer], [ \
     zend_func_info.h \
     zend_inference.h \
     zend_optimizer.h \
-    zend_ssa.h])
+    zend_ssa.h \
+    zend_worklist.h])
 
 PHP_ADD_SOURCES(TSRM, TSRM.c, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1)
 
diff --git a/win32/build/config.w32 b/win32/build/config.w32
index 2823cfe4a0785..424b2edc884be 100644
--- a/win32/build/config.w32
+++ b/win32/build/config.w32
@@ -323,7 +323,7 @@ if (VS_TOOLSET && VCVERS >= 1914) {
 }
 
 PHP_INSTALL_HEADERS("", "Zend/ TSRM/ main/ main/streams/ win32/");
-PHP_INSTALL_HEADERS("Zend/Optimizer", "zend_call_graph.h zend_cfg.h zend_dump.h zend_func_info.h zend_inference.h zend_optimizer.h zend_ssa.h");
+PHP_INSTALL_HEADERS("Zend/Optimizer", "zend_call_graph.h zend_cfg.h zend_dump.h zend_func_info.h zend_inference.h zend_optimizer.h zend_ssa.h zend_worklist.h");
 
 STDOUT.WriteBlankLines(1);