diff --git a/.gitignore b/.gitignore
index 214e176..0029459 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@ test_install
 builds
 build-linux
 vcpkg_installed
+.DS_Store
diff --git a/libraries/http_server/http_server/http_ctx.hh b/libraries/http_server/http_server/http_ctx.hh
index a233e8a..e5e1826 100644
--- a/libraries/http_server/http_server/http_ctx.hh
+++ b/libraries/http_server/http_server/http_ctx.hh
@@ -816,7 +816,14 @@ template <typename F> auto make_http_processor(F handler) {
       ctx.flush_responses();
   }
 }
-catch (const std::runtime_error& e) {
+catch (fiber_exception&) {
+  // Used internally (e.g. idle timeout, EPOLLRDHUP) to unwind the fiber via
+  // boost::context's exception-forwarding protocol. Must propagate to the
+  // callcc entry point in tcp_server.hh, which returns the continuation
+  // carried by the exception. Swallowing it here leaves boost::context's
+  // bookkeeping inconsistent and later crashes with a forced_unwind.
+  throw;
+} catch (const std::runtime_error& e) {
   std::cerr << "Error: " << e.what() << std::endl;
   return;
 } catch (...) {
diff --git a/single_headers/lithium.hh b/single_headers/lithium.hh
index 5bcfaa8..1e8b3a0 100644
--- a/single_headers/lithium.hh
+++ b/single_headers/lithium.hh
@@ -10415,7 +10415,14 @@ template <typename F> auto make_http_processor(F handler) {
       ctx.flush_responses();
   }
 }
-catch (const std::runtime_error& e) {
+catch (fiber_exception&) {
+  // Used internally (e.g. idle timeout, EPOLLRDHUP) to unwind the fiber via
+  // boost::context's exception-forwarding protocol. Must propagate to the
+  // callcc entry point in tcp_server.hh, which returns the continuation
+  // carried by the exception. Swallowing it here leaves boost::context's
+  // bookkeeping inconsistent and later crashes with a forced_unwind.
+  throw;
+} catch (const std::runtime_error& e) {
   std::cerr << "Error: " << e.what() << std::endl;
   return;
 } catch (...) {
diff --git a/single_headers/lithium_http_server.hh b/single_headers/lithium_http_server.hh
index 5d7acc3..ddb7ef7 100644
--- a/single_headers/lithium_http_server.hh
+++ b/single_headers/lithium_http_server.hh
@@ -7206,7 +7206,14 @@ template <typename F> auto make_http_processor(F handler) {
       ctx.flush_responses();
   }
 }
-catch (const std::runtime_error& e) {
+catch (fiber_exception&) {
+  // Used internally (e.g. idle timeout, EPOLLRDHUP) to unwind the fiber via
+  // boost::context's exception-forwarding protocol. Must propagate to the
+  // callcc entry point in tcp_server.hh, which returns the continuation
+  // carried by the exception. Swallowing it here leaves boost::context's
+  // bookkeeping inconsistent and later crashes with a forced_unwind.
+  throw;
+} catch (const std::runtime_error& e) {
   std::cerr << "Error: " << e.what() << std::endl;
   return;
 } catch (...) {
diff --git a/vcpkg b/vcpkg
index c2a21b7..cd61e1e 160000
--- a/vcpkg
+++ b/vcpkg
@@ -1 +1 @@
-Subproject commit c2a21b787cc505d5960d0292d30fd14306b07dd4
+Subproject commit cd61e1e26a038e82d6550a3ebbe0fbbfe7da78e3