diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1d86f6c24..2f41355cd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -194,7 +194,7 @@ include(FetchContent)
 FetchContent_Declare(
         fmt
         GIT_REPOSITORY https://github.com/fmtlib/fmt.git
-        GIT_TAG 10.2.1
+        GIT_TAG 11.0.2
 )
 
 FetchContent_Declare(
diff --git a/blocks/soapy/include/gnuradio-4.0/soapy/SoapyRaiiWrapper.hpp b/blocks/soapy/include/gnuradio-4.0/soapy/SoapyRaiiWrapper.hpp
index bf7cdd217..bb4a44185 100644
--- a/blocks/soapy/include/gnuradio-4.0/soapy/SoapyRaiiWrapper.hpp
+++ b/blocks/soapy/include/gnuradio-4.0/soapy/SoapyRaiiWrapper.hpp
@@ -780,7 +780,7 @@ static_assert(std::is_default_constructible_v<Device::Stream<float, SOAPY_SDR_RX
 
 template<>
 struct fmt::formatter<SoapySDRRange> {
-    constexpr auto parse(format_parse_context& ctx) const noexcept { return ctx.begin(); }
+    constexpr auto parse(fmt::format_parse_context& ctx) const noexcept { return ctx.begin(); }
 
     template<typename FormatContext>
     auto format(const gr::blocks::soapy::Range& range, FormatContext& ctx) const noexcept {
diff --git a/core/include/gnuradio-4.0/BlockModel.hpp b/core/include/gnuradio-4.0/BlockModel.hpp
index 6614858af..c4aebc6b3 100644
--- a/core/include/gnuradio-4.0/BlockModel.hpp
+++ b/core/include/gnuradio-4.0/BlockModel.hpp
@@ -525,7 +525,7 @@ struct fmt::formatter<gr::Edge> {
     }
 
     template<typename FormatContext>
-    auto format(const gr::Edge& e, FormatContext& ctx) {
+    auto format(const gr::Edge& e, FormatContext& ctx) const {
         const auto& name = [this](const gr::BlockModel* block) { return (formatSpecifier == 'l') ? block->uniqueName() : block->name(); };
 
         const auto portIndex = [](const gr::PortDefinition& port) {
diff --git a/core/include/gnuradio-4.0/Sequence.hpp b/core/include/gnuradio-4.0/Sequence.hpp
index 164edcb9f..36f8b2678 100644
--- a/core/include/gnuradio-4.0/Sequence.hpp
+++ b/core/include/gnuradio-4.0/Sequence.hpp
@@ -177,7 +177,7 @@ struct fmt::formatter<gr::Sequence> {
     }
 
     template<typename FormatContext>
-    auto format(gr::Sequence const& value, FormatContext& ctx) {
+    auto format(gr::Sequence const& value, FormatContext& ctx) const {
         return fmt::format_to(ctx.out(), "{}", value.value());
     }
 };
diff --git a/core/include/gnuradio-4.0/annotated.hpp b/core/include/gnuradio-4.0/annotated.hpp
index ae5d849fb..ed76395b3 100644
--- a/core/include/gnuradio-4.0/annotated.hpp
+++ b/core/include/gnuradio-4.0/annotated.hpp
@@ -423,7 +423,7 @@ struct fmt::formatter<gr::Annotated<T, description, Arguments...>> {
     }
 
     template<typename FormatContext>
-    constexpr auto format(const gr::Annotated<T, description, Arguments...>& annotated, FormatContext& ctx) {
+    constexpr auto format(const gr::Annotated<T, description, Arguments...>& annotated, FormatContext& ctx) const {
         // TODO: add switch for printing only brief and/or meta-information
         return value_formatter.format(annotated.value, ctx);
     }
diff --git a/core/include/gnuradio-4.0/thread/thread_affinity.hpp b/core/include/gnuradio-4.0/thread/thread_affinity.hpp
index 9273f162a..43c13aa16 100644
--- a/core/include/gnuradio-4.0/thread/thread_affinity.hpp
+++ b/core/include/gnuradio-4.0/thread/thread_affinity.hpp
@@ -258,7 +258,7 @@ struct fmt::formatter<gr::thread_pool::thread::Policy> {
     }
 
     template<typename FormatContext>
-    auto format(Policy policy, FormatContext& ctx) {
+    auto format(Policy policy, FormatContext& ctx) const {
         std::string policy_name;
         switch (policy) {
         case Policy::UNKNOWN: policy_name = "UNKNOWN"; break;
diff --git a/meta/include/gnuradio-4.0/meta/formatter.hpp b/meta/include/gnuradio-4.0/meta/formatter.hpp
index 82964bb37..cac9ded16 100644
--- a/meta/include/gnuradio-4.0/meta/formatter.hpp
+++ b/meta/include/gnuradio-4.0/meta/formatter.hpp
@@ -2,8 +2,6 @@
 #define GNURADIO_FORMATTER_HPP
 
 #include <chrono>
-#include <complex>
-#include <expected>
 #include <fmt/chrono.h>
 #include <fmt/format.h>
 #include <fmt/std.h>
@@ -23,66 +21,10 @@ namespace time {
 } // namespace time
 } // namespace gr
 
-template<typename T>
-struct fmt::formatter<std::complex<T>> {
-    char presentation = 'g'; // default format
-
-    template<typename ParseContext>
-    constexpr auto parse(ParseContext& ctx) {
-        auto it = ctx.begin(), end = ctx.end();
-        if (it != end && (*it == 'f' || *it == 'F' || *it == 'e' || *it == 'E' || *it == 'g' || *it == 'G')) {
-            presentation = *it++;
-        }
-        if (it != end && *it != '}') {
-            throw fmt::format_error("invalid format");
-        }
-        return it;
-    }
-
-    template<typename FormatContext>
-    constexpr auto format(const std::complex<T>& value, FormatContext& ctx) const {
-        // format according to: https://fmt.dev/papers/p2197r0.html#examples
-        const auto imag = value.imag();
-        switch (presentation) {
-        case 'e':
-            if (imag == 0) {
-                return fmt::format_to(ctx.out(), "{:e}", value.real());
-            }
-            return fmt::format_to(ctx.out(), "({:e}{:+e}i)", value.real(), imag);
-        case 'E':
-            if (imag == 0) {
-                return fmt::format_to(ctx.out(), "{:E}", value.real());
-            }
-            return fmt::format_to(ctx.out(), "({:E}{:+E}i)", value.real(), imag);
-        case 'f':
-            if (imag == 0) {
-                return fmt::format_to(ctx.out(), "{:f}", value.real());
-            }
-            return fmt::format_to(ctx.out(), "({:f}{:+f}i)", value.real(), imag);
-        case 'F':
-            if (imag == 0) {
-                return fmt::format_to(ctx.out(), "{:F}", value.real());
-            }
-            return fmt::format_to(ctx.out(), "({:F}{:+F}i)", value.real(), imag);
-        case 'G':
-            if (imag == 0) {
-                return fmt::format_to(ctx.out(), "{:G}", value.real());
-            }
-            return fmt::format_to(ctx.out(), "({:G}{:+G}i)", value.real(), imag);
-        case 'g':
-        default:
-            if (imag == 0) {
-                return fmt::format_to(ctx.out(), "{:g}", value.real());
-            }
-            return fmt::format_to(ctx.out(), "({:g}{:+g}i)", value.real(), imag);
-        }
-    }
-};
-
 // simplified formatter for UncertainValue
 template<gr::arithmetic_or_complex_like T>
 struct fmt::formatter<gr::UncertainValue<T>> {
-    constexpr auto parse(format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
+    constexpr auto parse(fmt::format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
 
     template<typename FormatContext>
     constexpr auto format(const gr::UncertainValue<T>& value, FormatContext& ctx) const noexcept {
@@ -126,7 +68,7 @@ constexpr std::string join(const Container& container, const Separator& separato
 
 template<>
 struct fmt::formatter<pmtv::map_t::value_type> {
-    constexpr auto parse(format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
+    constexpr auto parse(fmt::format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
 
     template<typename FormatContext>
     auto format(const pmtv::map_t::value_type& kv, FormatContext& ctx) const noexcept {
@@ -136,7 +78,7 @@ struct fmt::formatter<pmtv::map_t::value_type> {
 
 template<pmtv::IsPmt T>
 struct fmt::formatter<T> { // alternate pmtv formatter optimised for compile-time not runtime
-    constexpr auto parse(format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
+    constexpr auto parse(fmt::format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
 
     template<typename FormatContext>
     auto format(const T& value, FormatContext& ctx) const noexcept {
@@ -180,7 +122,7 @@ struct fmt::formatter<T> { // alternate pmtv formatter optimised for compile-tim
 
 template<>
 struct fmt::formatter<pmtv::map_t> {
-    constexpr auto parse(format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
+    constexpr auto parse(fmt::format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
 
     template<typename FormatContext>
     constexpr auto format(const pmtv::map_t& value, FormatContext& ctx) const noexcept {
@@ -194,7 +136,7 @@ template<>
 struct fmt::formatter<std::vector<bool>> {
     char presentation = 'c';
 
-    constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    constexpr auto parse(fmt::format_parse_context& ctx) -> decltype(ctx.begin()) {
         auto it = ctx.begin(), end = ctx.end();
         if (it != end && (*it == 's' || *it == 'c')) {
             presentation = *it++;
@@ -221,18 +163,4 @@ struct fmt::formatter<std::vector<bool>> {
     }
 };
 
-template<typename Value, typename Error>
-struct fmt::formatter<std::expected<Value, Error>> {
-    constexpr auto parse(format_parse_context& ctx) const noexcept -> decltype(ctx.begin()) { return ctx.begin(); }
-
-    template<typename FormatContext>
-    auto format(const std::expected<Value, Error>& ret, FormatContext& ctx) const -> decltype(ctx.out()) {
-        if (ret.has_value()) {
-            return fmt::format_to(ctx.out(), "<std::expected-value: {}>", ret.value());
-        } else {
-            return fmt::format_to(ctx.out(), "<std::unexpected: {}>", ret.error());
-        }
-    }
-};
-
 #endif // GNURADIO_FORMATTER_HPP
diff --git a/meta/test/qa_formatter.cpp b/meta/test/qa_formatter.cpp
index 636bc1c4e..8d632fb62 100644
--- a/meta/test/qa_formatter.cpp
+++ b/meta/test/qa_formatter.cpp
@@ -1,71 +1,11 @@
 #include <boost/ut.hpp>
 
-#include <complex>
-#include <expected>
-
 #include <fmt/format.h>
 
 #include <gnuradio-4.0/meta/formatter.hpp>
 
 namespace gr::meta::test {
 
-const boost::ut::suite complexFormatter = [] {
-    using namespace boost::ut;
-    using namespace std::literals::complex_literals;
-    using namespace std::literals::string_literals;
-
-    using C                                = std::complex<double>;
-    "fmt::formatter<std::complex<T>>"_test = [] {
-        expect(eq("(1+1i)"s, fmt::format("{}", C(1., +1.))));
-        expect(eq("(1-1i)"s, fmt::format("{}", C(1., -1.))));
-        expect(eq("1"s, fmt::format("{}", C(1., 0.))));
-        expect(eq("(1.234+1.12346e+12i)"s, fmt::format("{}", C(1.234, 1123456789012))));
-        expect(eq("(1+1i)"s, fmt::format("{:g}", C(1., +1.))));
-        expect(eq("(1-1i)"s, fmt::format("{:g}", C(1., -1.))));
-        expect(eq("1"s, fmt::format("{:g}", C(1., 0.))));
-        expect(eq("(1.12346e+12+1.234i)"s, fmt::format("{:g}", C(1123456789012, 1.234))));
-        expect(eq("1.12346e+12"s, fmt::format("{:g}", C(1123456789012, 0))));
-        expect(eq("(1.234+1.12346e+12i)"s, fmt::format("{:g}", C(1.234, 1123456789012))));
-        expect(eq("(1.12346E+12+1.234i)"s, fmt::format("{:G}", C(1123456789012, 1.234))));
-        expect(eq("1.12346E+12"s, fmt::format("{:G}", C(1123456789012, 0))));
-        expect(eq("(1.234+1.12346E+12i)"s, fmt::format("{:G}", C(1.234, 1123456789012))));
-
-        expect(eq("(1.000000+1.000000i)"s, fmt::format("{:f}", C(1., +1.))));
-        expect(eq("(1.000000-1.000000i)"s, fmt::format("{:f}", C(1., -1.))));
-        expect(eq("1.000000"s, fmt::format("{:f}", C(1., 0.))));
-        expect(eq("(1.000000+1.000000i)"s, fmt::format("{:F}", C(1., +1.))));
-        expect(eq("(1.000000-1.000000i)"s, fmt::format("{:F}", C(1., -1.))));
-        expect(eq("1.000000"s, fmt::format("{:F}", C(1., 0.))));
-
-        expect(eq("(1.000000e+00+1.000000e+00i)"s, fmt::format("{:e}", C(1., +1.))));
-        expect(eq("(1.000000e+00-1.000000e+00i)"s, fmt::format("{:e}", C(1., -1.))));
-        expect(eq("1.000000e+00"s, fmt::format("{:e}", C(1., 0.))));
-        expect(eq("(1.000000E+00+1.000000E+00i)"s, fmt::format("{:E}", C(1., +1.))));
-        expect(eq("(1.000000E+00-1.000000E+00i)"s, fmt::format("{:E}", C(1., -1.))));
-        expect(eq("1.000000E+00"s, fmt::format("{:E}", C(1., 0.))));
-    };
-};
-
-const boost::ut::suite uncertainValueFormatter = [] {
-    using namespace boost::ut;
-    using namespace std::literals::complex_literals;
-    using namespace std::literals::string_literals;
-    using UncertainDouble  = gr::UncertainValue<double>;
-    using UncertainComplex = gr::UncertainValue<std::complex<double>>;
-
-    "fmt::formatter<gr::meta::UncertainValue<T>>"_test = [] {
-        // Test with UncertainValue<double>
-        expect(eq("(1.23 ± 0.45)"s, fmt::format("{}", UncertainDouble{1.23, 0.45})));
-        expect(eq("(3.14 ± 0.01)"s, fmt::format("{}", UncertainDouble{3.14, 0.01})));
-        expect(eq("(0 ± 0)"s, fmt::format("{}", UncertainDouble{0, 0})));
-
-        // Test with UncertainValue<std::complex<double>>
-        expect(eq("((1+2i) ± (0.1+0.2i))"s, fmt::format("{}", UncertainComplex{{1, 2}, {0.1, 0.2}})));
-        expect(eq("((3.14+1.59i) ± (0.01+0.02i))"s, fmt::format("{}", UncertainComplex{{3.14, 1.59}, {0.01, 0.02}})));
-        expect(eq("(0 ± 0)"s, fmt::format("{}", UncertainComplex{{0, 0}, {0, 0}})));
-    };
-};
-
 const boost::ut::suite propertyMapFormatter = [] {
     using namespace boost::ut;
     using namespace std::literals::string_literals;
@@ -91,20 +31,6 @@ const boost::ut::suite vectorBoolFormatter = [] {
     };
 };
 
-const boost::ut::suite expectedFormatter = [] {
-    using namespace boost::ut;
-    using namespace std::string_literals;
-    using Expected = std::expected<int, std::string>;
-
-    auto value = fmt::format("{}", Expected(5));
-    fmt::println("expected formatter test: {}", value);
-    expect(eq(value, "<std::expected-value: 5>"s));
-
-    auto error = fmt::format("{}", Expected(std::unexpected("Error")));
-    fmt::println("expected formatter test: {}", error);
-    expect(eq(error, "<std::unexpected: Error>"s));
-};
-
 } // namespace gr::meta::test
 
 int main() { /* tests are statically executed */ }
\ No newline at end of file