diff --git a/server/TracyWorker.cpp b/server/TracyWorker.cpp
index 67f94799..bf82469d 100644
--- a/server/TracyWorker.cpp
+++ b/server/TracyWorker.cpp
@@ -19,14 +19,15 @@
 namespace tracy
 {
 
-static const uint8_t FileHeader[8] { 't', 'r', 'a', 'c', 'y', 0, 3, 0 };
-enum { FileHeaderMagic = 5 };
-
 static constexpr int FileVersion( uint8_t h5, uint8_t h6, uint8_t h7 )
 {
     return ( h5 << 16 ) | ( h6 << 8 ) | h7;
 }
 
+static const uint8_t FileHeader[8] { 't', 'r', 'a', 'c', 'y', 0, 3, 0 };
+enum { FileHeaderMagic = 5 };
+static const int CurrentVersion = FileVersion( FileHeader[FileHeaderMagic], FileHeader[FileHeaderMagic+1], FileHeader[FileHeaderMagic+2] );
+
 Worker::Worker( const char* addr )
     : m_addr( addr )
     , m_connected( false )
@@ -61,6 +62,11 @@ Worker::Worker( FileRead& f, EventType::Type eventMask )
     if( memcmp( FileHeader, hdr, FileHeaderMagic ) == 0 )
     {
         fileVer = FileVersion( hdr[FileHeaderMagic], hdr[FileHeaderMagic+1], hdr[FileHeaderMagic+2] );
+        if( fileVer > CurrentVersion )
+        {
+            throw UnsupportedVersion( fileVer );
+        }
+
         f.Read( &m_delay, sizeof( m_delay ) );
     }
     else
diff --git a/server/TracyWorker.hpp b/server/TracyWorker.hpp
index 9f49e23e..43c5e3d2 100644
--- a/server/TracyWorker.hpp
+++ b/server/TracyWorker.hpp
@@ -4,6 +4,7 @@
 #include <atomic>
 #include <limits>
 #include <map>
+#include <stdexcept>
 #include <string>
 #include <thread>
 #include <vector>
@@ -37,6 +38,12 @@ namespace EventType
     };
 }
 
+struct UnsupportedVersion : public std::exception
+{
+    UnsupportedVersion( int version ) : version( version ) {}
+    int version;
+};
+
 class Worker
 {
 #pragma pack( 1 )