diff --git a/derive.cc b/derive.cc
index abec5f32..3b82ddd5 100644
--- a/derive.cc
+++ b/derive.cc
@@ -3,6 +3,8 @@
 #include "error.h"
 #include "mask.h"
 
+#include <memory>
+
 namespace ledger {
 
 entry_t * derive_new_entry(journal_t& journal,
diff --git a/qif.cc b/qif.cc
index 83b25f81..70b61a0b 100644
--- a/qif.cc
+++ b/qif.cc
@@ -5,6 +5,7 @@
 #include "util.h"
 
 #include <cstring>
+#include <memory>
 
 namespace ledger {
 
diff --git a/quotes.cc b/quotes.cc
index 99b031bf..1b53f38f 100644
--- a/quotes.cc
+++ b/quotes.cc
@@ -4,7 +4,8 @@
 #include "debug.h"
 
 #include <fstream>
-#include <stdlib.h>
+#include <cstdlib>
+#include <cstdio>
 
 namespace ledger {