diff --git a/externals/fmt b/externals/fmt
index 2ae6bca4..796beaad 160000
--- a/externals/fmt
+++ b/externals/fmt
@@ -1 +1 @@
-Subproject commit 2ae6bca488795929a0207d109e135751f10c53d9
+Subproject commit 796beaaddb5226162fe00c2c55e322d80d26f3d8
diff --git a/src/frontend/disassembler/disassembler_arm.cpp b/src/frontend/disassembler/disassembler_arm.cpp
index b7261b03..fa33bd59 100644
--- a/src/frontend/disassembler/disassembler_arm.cpp
+++ b/src/frontend/disassembler/disassembler_arm.cpp
@@ -8,6 +8,7 @@
 #include <string>
 
 #include <fmt/format.h>
+#include <fmt/ostream.h>
 
 #include "common/bit_util.h"
 #include "common/string_util.h"
diff --git a/src/frontend/disassembler/disassembler_thumb.cpp b/src/frontend/disassembler/disassembler_thumb.cpp
index c34afef2..16b3938c 100644
--- a/src/frontend/disassembler/disassembler_thumb.cpp
+++ b/src/frontend/disassembler/disassembler_thumb.cpp
@@ -8,6 +8,7 @@
 #include <string>
 
 #include <fmt/format.h>
+#include <fmt/ostream.h>
 
 #include "common/bit_util.h"
 #include "common/string_util.h"
diff --git a/src/frontend/ir/basic_block.cpp b/src/frontend/ir/basic_block.cpp
index d8bc56b9..0a358e44 100644
--- a/src/frontend/ir/basic_block.cpp
+++ b/src/frontend/ir/basic_block.cpp
@@ -10,6 +10,7 @@
 #include <string>
 
 #include <fmt/format.h>
+#include <fmt/ostream.h>
 
 #include "common/assert.h"
 #include "frontend/ir/basic_block.h"