diff --git a/analyzer/meson.build b/analyzer/meson.build
index 1e6f342..ef6af71 100644
--- a/analyzer/meson.build
+++ b/analyzer/meson.build
@@ -19,7 +19,6 @@
 # Library dependencies.
 analyzer_deps = [
     dbus_interfaces_dep,
-    fmt_dep,
     libhei_dep,
     nlohmann_json_dep,
     sdbusplus_dep,
diff --git a/analyzer/service_data.hpp b/analyzer/service_data.hpp
index 36c8f64..a749f73 100644
--- a/analyzer/service_data.hpp
+++ b/analyzer/service_data.hpp
@@ -1,13 +1,13 @@
 #pragma once
 
-#include <fmt/format.h>
-
 #include <analyzer/analyzer_main.hpp>
 #include <analyzer/callout.hpp>
 #include <hei_main.hpp>
 #include <nlohmann/json.hpp>
 #include <util/pdbg.hpp>
 
+#include <format>
+
 namespace analyzer
 {
 
@@ -165,7 +165,7 @@
     void addSrcSubsystem(
         std::map<std::string, std::string>& io_additionalData) const
     {
-        io_additionalData["PEL_SUBSYSTEM"] = fmt::format(
+        io_additionalData["PEL_SUBSYSTEM"] = std::format(
             "0x{:02x}", static_cast<uint8_t>(iv_srcSubsystem.first));
     }
 
diff --git a/attn/ti_handler.cpp b/attn/ti_handler.cpp
index 56aae66..3c93c3a 100644
--- a/attn/ti_handler.cpp
+++ b/attn/ti_handler.cpp
@@ -1,5 +1,3 @@
-#include <fmt/format.h>
-
 #include <attn/attn_common.hpp>
 #include <attn/attn_dbus.hpp>
 #include <attn/attn_dump.hpp>
@@ -11,6 +9,7 @@
 #include <util/dbus.hpp>
 #include <util/trace.hpp>
 
+#include <format>
 #include <iomanip>
 #include <iostream>
 
@@ -187,7 +186,7 @@
             // Translate hex src value to ascii. This results in an 8
             // character SRC (hostboot SRC is 32 bits)
             tiAdditionalData["SrcAscii"] =
-                fmt::format("{:08X}", be32toh(i_tiDataArea->srcWord12HbWord0));
+                std::format("{:08X}", be32toh(i_tiDataArea->srcWord12HbWord0));
 
             // dump flag is only valid for TI with EID (not TI with SRC)
             trace::inf("Ignoring TI info dump flag for HB TI with SRC");
@@ -260,60 +259,60 @@
         return;
     }
 
-    i_map["0x00 TI Area Valid"] = fmt::format("{:02x}",
+    i_map["0x00 TI Area Valid"] = std::format("{:02x}",
                                               i_tiDataArea->tiAreaValid);
-    i_map["0x01 Command"] = fmt::format("{:02x}", i_tiDataArea->command);
+    i_map["0x01 Command"] = std::format("{:02x}", i_tiDataArea->command);
     i_map["0x02 Num. Data Bytes"] =
-        fmt::format("{:04x}", be16toh(i_tiDataArea->numDataBytes));
-    i_map["0x04 Reserved"] = fmt::format("{:02x}", i_tiDataArea->reserved1);
+        std::format("{:04x}", be16toh(i_tiDataArea->numDataBytes));
+    i_map["0x04 Reserved"] = std::format("{:02x}", i_tiDataArea->reserved1);
     i_map["0x06 HWDump Type"] =
-        fmt::format("{:04x}", be16toh(i_tiDataArea->hardwareDumpType));
-    i_map["0x08 SRC Format"] = fmt::format("{:02x}", i_tiDataArea->srcFormat);
-    i_map["0x09 SRC Flags"] = fmt::format("{:02x}", i_tiDataArea->srcFlags);
-    i_map["0x0a Num. ASCII Words"] = fmt::format("{:02x}",
+        std::format("{:04x}", be16toh(i_tiDataArea->hardwareDumpType));
+    i_map["0x08 SRC Format"] = std::format("{:02x}", i_tiDataArea->srcFormat);
+    i_map["0x09 SRC Flags"] = std::format("{:02x}", i_tiDataArea->srcFlags);
+    i_map["0x0a Num. ASCII Words"] = std::format("{:02x}",
                                                  i_tiDataArea->numAsciiWords);
-    i_map["0x0b Num. Hex Words"] = fmt::format("{:02x}",
+    i_map["0x0b Num. Hex Words"] = std::format("{:02x}",
                                                i_tiDataArea->numHexWords);
-    i_map["0x0e Length of SRC"] = fmt::format("{:04x}",
+    i_map["0x0e Length of SRC"] = std::format("{:04x}",
                                               be16toh(i_tiDataArea->lenSrc));
     i_map["0x10 SRC Word 12"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord12HbWord0));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord12HbWord0));
     i_map["0x14 SRC Word 13"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord13HbWord2));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord13HbWord2));
     i_map["0x18 SRC Word 14"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord14HbWord3));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord14HbWord3));
     i_map["0x1c SRC Word 15"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord15HbWord4));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord15HbWord4));
     i_map["0x20 SRC Word 16"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord16HbWord5));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord16HbWord5));
     i_map["0x24 SRC Word 17"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord17HbWord6));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord17HbWord6));
     i_map["0x28 SRC Word 18"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord18HbWord7));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord18HbWord7));
     i_map["0x2c SRC Word 19"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord19HbWord8));
-    i_map["0x30 ASCII Data"] = fmt::format("{:08x}",
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord19HbWord8));
+    i_map["0x30 ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData0));
-    i_map["0x34 ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x34 ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData1));
-    i_map["0x38 ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x38 ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData2));
-    i_map["0x3c ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x3c ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData3));
-    i_map["0x40 ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x40 ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData4));
-    i_map["0x44 ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x44 ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData5));
-    i_map["0x48 ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x48 ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData6));
-    i_map["0x4c ASCII Data"] = fmt::format("{:08x}",
+    i_map["0x4c ASCII Data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData7));
-    i_map["0x50 Location"] = fmt::format("{:02x}", i_tiDataArea->location);
-    i_map["0x51 Code Sections"] = fmt::format("{:02x}",
+    i_map["0x50 Location"] = std::format("{:02x}", i_tiDataArea->location);
+    i_map["0x51 Code Sections"] = std::format("{:02x}",
                                               i_tiDataArea->codeSection);
-    i_map["0x52 Additional Size"] = fmt::format("{:02x}",
+    i_map["0x52 Additional Size"] = std::format("{:02x}",
                                                 i_tiDataArea->additionalSize);
-    i_map["0x53 Additional Data"] = fmt::format("{:02x}",
+    i_map["0x53 Additional Data"] = std::format("{:02x}",
                                                 i_tiDataArea->andData);
 }
 
@@ -326,32 +325,32 @@
         return;
     }
 
-    i_map["0x00 TI Area Valid"] = fmt::format("{:02x}",
+    i_map["0x00 TI Area Valid"] = std::format("{:02x}",
                                               i_tiDataArea->tiAreaValid);
-    i_map["0x04 Reserved"] = fmt::format("{:02x}", i_tiDataArea->reserved1);
-    i_map["0x05 HB_Term. Type"] = fmt::format("{:02x}",
+    i_map["0x04 Reserved"] = std::format("{:02x}", i_tiDataArea->reserved1);
+    i_map["0x05 HB_Term. Type"] = std::format("{:02x}",
                                               i_tiDataArea->hbTerminateType);
-    i_map["0x0c HB Flags"] = fmt::format("{:02x}", i_tiDataArea->hbFlags);
-    i_map["0x0d Source"] = fmt::format("{:02x}", i_tiDataArea->source);
+    i_map["0x0c HB Flags"] = std::format("{:02x}", i_tiDataArea->hbFlags);
+    i_map["0x0d Source"] = std::format("{:02x}", i_tiDataArea->source);
     i_map["0x10 HB Word 0"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord12HbWord0));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord12HbWord0));
     i_map["0x14 HB Word 2"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord13HbWord2));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord13HbWord2));
     i_map["0x18 HB Word 3"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord14HbWord3));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord14HbWord3));
     i_map["0x1c HB Word 4"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord15HbWord4));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord15HbWord4));
     i_map["0x20 HB Word 5"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord16HbWord5));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord16HbWord5));
     i_map["0x24 HB Word 6"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord17HbWord6));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord17HbWord6));
     i_map["0x28 HB Word 7"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord18HbWord7));
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord18HbWord7));
     i_map["0x2c HB Word 8"] =
-        fmt::format("{:08x}", be32toh(i_tiDataArea->srcWord19HbWord8));
-    i_map["0x30 error_data"] = fmt::format("{:08x}",
+        std::format("{:08x}", be32toh(i_tiDataArea->srcWord19HbWord8));
+    i_map["0x30 error_data"] = std::format("{:08x}",
                                            be32toh(i_tiDataArea->asciiData0));
-    i_map["0x34 EID"] = fmt::format("{:08x}",
+    i_map["0x34 EID"] = std::format("{:08x}",
                                     be32toh(i_tiDataArea->asciiData1));
 }
 
diff --git a/meson.build b/meson.build
index cb32679..2d294f9 100644
--- a/meson.build
+++ b/meson.build
@@ -64,8 +64,6 @@
 
 libpdbg_dep = cmplr.find_library('pdbg')
 
-fmt_dep = dependency('fmt')
-
 if get_option('phal').allowed()
   libphal_dep = cmplr.find_library('phal')
 endif
diff --git a/util/dbus.cpp b/util/dbus.cpp
index bfb5197..af63487 100644
--- a/util/dbus.cpp
+++ b/util/dbus.cpp
@@ -1,9 +1,9 @@
-#include <fmt/format.h>
-
 #include <util/dbus.hpp>
 #include <util/trace.hpp>
 #include <xyz/openbmc_project/State/Boot/Progress/server.hpp>
 
+#include <format>
+
 namespace util
 {
 namespace dbus
@@ -428,7 +428,7 @@
             try
             {
                 // Format the vector into a single hex string to compare to.
-                std::string hexId = fmt::format("0x{:02x}{:02x}{:02x}{:02x}",
+                std::string hexId = std::format("0x{:02x}{:02x}{:02x}{:02x}",
                                                 ids.at(0), ids.at(1), ids.at(2),
                                                 ids.at(3));