diff --git a/CMakeLists.txt b/CMakeLists.txt
index 52bbab345..57e81f4fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,6 +107,14 @@ set(VISOR_STATIC_PLUGINS)
 enable_testing()
 
 message(STATUS "Building pktvisor version ${CMAKE_PROJECT_VERSION_MAJOR}.${CMAKE_PROJECT_VERSION_MINOR}.${CMAKE_PROJECT_VERSION_PATCH}${VISOR_PRERELEASE}")
+
+# opentelemetry-cpp 1.26.0 generates proto headers with dllexport_decl=OPENTELEMETRY_PROTO_API; the Conan recipe doesn't propagate the macro. On Windows the proto package is a DLL (consumers must import); elsewhere it expands to nothing.
+if(WIN32)
+    add_compile_definitions("OPENTELEMETRY_PROTO_API=__declspec(dllimport)")
+else()
+    add_compile_definitions(OPENTELEMETRY_PROTO_API=)
+endif()
+
 add_subdirectory(3rd)
 add_subdirectory(libs)
 add_subdirectory(src)
diff --git a/conanfile.py b/conanfile.py
index c87f24cbc..017a0f72a 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -7,28 +7,27 @@ class Pktvisor(ConanFile):
     generators = "CMakeToolchain", "CMakeDeps"
 
     def requirements(self):
-        self.requires("catch2/3.14.0")
-        self.requires("cpp-httplib/0.18.3")
+        self.requires("catch2/3.15.1")
+        self.requires("cpp-httplib/0.27.0")
         self.requires("docopt.cpp/0.6.3")
         self.requires("fast-cpp-csv-parser/cci.20240102")
         self.requires("json-schema-validator/2.4.0")
         self.requires("libmaxminddb/1.12.2")
-        self.requires("nlohmann_json/3.11.3")
-        self.requires("openssl/3.6.2")
+        self.requires("nlohmann_json/3.12.0", force=True)
+        self.requires("openssl/3.6.3")
         if self.settings.os != "Windows":
-            self.requires("libpcap/1.10.5", force=True)
+            self.requires("libpcap/1.10.6", force=True)
         else:
-            self.requires("npcap/1.70")
-        self.requires("opentelemetry-cpp/1.24.0")
+            self.requires("npcap/1.86", force=True)
+        self.requires("opentelemetry-cpp/1.26.0")
         self.requires("pcapplusplus/25.05")
         self.requires("protobuf/6.33.5")
         self.requires("sigslot/1.2.3")
-        self.requires("fmt/10.2.1", force=True)
-        self.requires("spdlog/1.15.0")
+        self.requires("spdlog/1.17.0")
         self.requires("uvw/3.4.0")
-        self.requires("yaml-cpp/0.8.0")
+        self.requires("yaml-cpp/0.9.0")
         self.requires("robin-hood-hashing/3.11.5")
-        self.requires("libcurl/8.19.0")
+        self.requires("libcurl/8.20.0")
         if (
             "libc" not in self.settings.compiler.fields
             or self.settings.compiler.libc != "musl"
diff --git a/src/GeoDB.cpp b/src/GeoDB.cpp
index a6e70a49f..bb7b02a1c 100644
--- a/src/GeoDB.cpp
+++ b/src/GeoDB.cpp
@@ -5,6 +5,7 @@
 #include "GeoDB.h"
 #include <cstring>
 #include <fmt/format.h>
+#include <fmt/ranges.h>
 #include <stdexcept>
 
 namespace visor::geo {
diff --git a/src/InputStream.h b/src/InputStream.h
index bd866922c..7225f32bd 100644
--- a/src/InputStream.h
+++ b/src/InputStream.h
@@ -7,6 +7,7 @@
 #include "AbstractModule.h"
 #include "InputEventProxy.h"
 #include "StreamHandler.h"
+#include <fmt/ranges.h>
 
 namespace visor {
 
diff --git a/src/StreamHandler.h b/src/StreamHandler.h
index f74cc0c39..9198d62f9 100644
--- a/src/StreamHandler.h
+++ b/src/StreamHandler.h
@@ -10,6 +10,7 @@
 #include "InputEventProxy.h"
 #include <ctime>
 #include <fmt/ostream.h>
+#include <fmt/ranges.h>
 #include <nlohmann/json.hpp>
 #include <sstream>
 
diff --git a/src/handlers/dns/v1/DnsStreamHandler.cpp b/src/handlers/dns/v1/DnsStreamHandler.cpp
index d10fbc09e..d027036b0 100644
--- a/src/handlers/dns/v1/DnsStreamHandler.cpp
+++ b/src/handlers/dns/v1/DnsStreamHandler.cpp
@@ -5,6 +5,7 @@
 #include "DnsStreamHandler.h"
 #include "HandlerModulePlugin.h"
 #include "utils.h"
+#include <fmt/ranges.h>
 #ifdef __GNUC__
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wpedantic"
diff --git a/src/handlers/dns/v2/DnsStreamHandler.cpp b/src/handlers/dns/v2/DnsStreamHandler.cpp
index 78d4d1370..1f1337841 100644
--- a/src/handlers/dns/v2/DnsStreamHandler.cpp
+++ b/src/handlers/dns/v2/DnsStreamHandler.cpp
@@ -5,6 +5,7 @@
 #include "DnsStreamHandler.h"
 #include "HandlerModulePlugin.h"
 #include "utils.h"
+#include <fmt/ranges.h>
 #ifdef __GNUC__
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wpedantic"
diff --git a/src/inputs/netprobe/NetProbeInputStream.cpp b/src/inputs/netprobe/NetProbeInputStream.cpp
index 629475bca..2f3b4a6be 100644
--- a/src/inputs/netprobe/NetProbeInputStream.cpp
+++ b/src/inputs/netprobe/NetProbeInputStream.cpp
@@ -7,6 +7,7 @@
 #include "PingProbe.h"
 #include "TcpProbe.h"
 #include "ThreadName.h"
+#include <fmt/ranges.h>
 #ifdef __GNUC__
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wpedantic"