diff --git a/package/c-capnproto/Config.in b/package/c-capnproto/Config.in
index d1f3236af8..41a59d7a22 100644
--- a/package/c-capnproto/Config.in
+++ b/package/c-capnproto/Config.in
@@ -6,6 +6,8 @@ config BR2_PACKAGE_C_CAPNPROTO
 	depends on BR2_INSTALL_LIBSTDCPP # capnproto
 	depends on BR2_TOOLCHAIN_HAS_THREADS # capnproto
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC # capnproto
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # capnproto
+	depends on BR2_TOOLCHAIN_HAS_UCONTEXT # capnproto
 	select BR2_PACKAGE_CAPNPROTO
 	help
 	  A C plugin for Cap'n Proto. Generates the code generator
@@ -14,10 +16,12 @@ config BR2_PACKAGE_C_CAPNPROTO
 
 	  https://github.com/opensourcerouting/c-capnproto
 
-comment "c-capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic"
+comment "c-capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic, ucontext and not gcc bug 64735"
 	depends on BR2_USE_MMU
 	depends on!BR2_HOST_GCC_AT_LEAST_5 || \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_5 || \
 		!BR2_INSTALL_LIBSTDCPP || \
 		!BR2_TOOLCHAIN_HAS_THREADS || \
-		!BR2_TOOLCHAIN_HAS_ATOMIC
+		!BR2_TOOLCHAIN_HAS_ATOMIC || \
+		BR2_TOOLCHAIN_HAS_GCC_BUG_64735 || \
+		!BR2_TOOLCHAIN_HAS_UCONTEXT
diff --git a/package/capnproto/Config.in b/package/capnproto/Config.in
index cd9cb647af..943ba9de29 100644
--- a/package/capnproto/Config.in
+++ b/package/capnproto/Config.in
@@ -6,6 +6,8 @@ config BR2_PACKAGE_CAPNPROTO
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735
+	depends on BR2_TOOLCHAIN_HAS_UCONTEXT
 	help
 	  Cap'n Proto is an insanely fast data interchange format
 	  and capability-based RPC system. Think JSON, except
@@ -15,10 +17,12 @@ config BR2_PACKAGE_CAPNPROTO
 
 	  https://capnproto.org/index.html
 
-comment "capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic"
+comment "capnproto needs host and target gcc >= 5 w/ C++14, threads, atomic, ucontext and not gcc bug 64735"
 	depends on BR2_USE_MMU
 	depends on !BR2_HOST_GCC_AT_LEAST_5 || \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_5 || \
 		!BR2_INSTALL_LIBSTDCPP || \
 		!BR2_TOOLCHAIN_HAS_THREADS || \
-		!BR2_TOOLCHAIN_HAS_ATOMIC
+		!BR2_TOOLCHAIN_HAS_ATOMIC || \
+		BR2_TOOLCHAIN_HAS_GCC_BUG_64735 || \
+		!BR2_TOOLCHAIN_HAS_UCONTEXT
diff --git a/package/capnproto/capnproto.hash b/package/capnproto/capnproto.hash
index 98467f8634..d4500e0aad 100644
--- a/package/capnproto/capnproto.hash
+++ b/package/capnproto/capnproto.hash
@@ -1,3 +1,3 @@
 # Locally calculated
-sha256	76c7114a3d142ad08b7208b3964a26e72a6320ee81331d3f0b87569fc9c47a28  capnproto-0.7.0.tar.gz
+sha256	6d8b43a7ec2a764b4dfe4139a7cdd070ad9057f106898050d9f4db3754b98820  capnproto-0.8.0.tar.gz
 sha256	9564998c8d7f270a61a8b89869a8d17a9d5e3783b64027788b5e339ec8479e10  LICENSE
diff --git a/package/capnproto/capnproto.mk b/package/capnproto/capnproto.mk
index 34fb885914..e9e89dff07 100644
--- a/package/capnproto/capnproto.mk
+++ b/package/capnproto/capnproto.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-CAPNPROTO_VERSION = 0.7.0
+CAPNPROTO_VERSION = 0.8.0
 CAPNPROTO_SITE = $(call github,capnproto,capnproto,v$(CAPNPROTO_VERSION))
 CAPNPROTO_LICENSE = MIT
 CAPNPROTO_LICENSE_FILES = LICENSE