diff --git a/ports/aws-c-common/portfile.cmake b/ports/aws-c-common/portfile.cmake
index f3704ef05b..3af543058d 100644
--- a/ports/aws-c-common/portfile.cmake
+++ b/ports/aws-c-common/portfile.cmake
@@ -1,8 +1,8 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO awslabs/aws-c-common
-    REF 4a21a1c0757083a16497fea27886f5f20ccdf334 # v0.4.56
-    SHA512 68898a8ac15d5490f45676eabfbe0df9e45370a74c543a28909fd0d85fed48dfcf4bcd6ea2d01d1a036dd352e2e4e0b08c48c63ab2a2b477fe150b46a827136e
+    REF 13adef72b7813ec878817c6d50a7a3f241015d8a # v0.4.57
+    SHA512 28256522ac6af544d7464e3e7dcd4dc802ae2b09728bf8f167f86a6487bb756d0cad5eb4a2480610b2967b9c24c4a7f70621894517aa2828ffdeb0479453803b
     HEAD_REF master
     PATCHES
         disable-error-4068.patch # This patch fixes dependency port compilation failure
diff --git a/ports/curl/portfile.cmake b/ports/curl/portfile.cmake
index be66d452be..a5ce325e9d 100644
--- a/ports/curl/portfile.cmake
+++ b/ports/curl/portfile.cmake
@@ -94,6 +94,8 @@ vcpkg_configure_cmake(
         -DCMAKE_DISABLE_FIND_PACKAGE_Perl=ON
         -DENABLE_DEBUG=ON
         -DCURL_CA_FALLBACK=ON
+        -DCURL_CA_PATH=none
+        -DCURL_CA_BUNDLE=none
     OPTIONS_DEBUG
         ${EXTRA_ARGS_DEBUG}
     OPTIONS_RELEASE
diff --git a/ports/snappy/portfile.cmake b/ports/snappy/portfile.cmake
index 75dd133027..84345c7caa 100644
--- a/ports/snappy/portfile.cmake
+++ b/ports/snappy/portfile.cmake
@@ -4,6 +4,7 @@ vcpkg_from_github(
     REF 537f4ad6240e586970fe554614542e9717df7902 # 1.1.8
     SHA512 555d3b69a6759592736cbaae8f41654f0cf14e8be693b5dde37640191e53daec189f895872557b173e905d10681ef502f3e6ed8566811add963ffef96ce4016d
     HEAD_REF master
+    PATCHES "snappy-disable-bmi.patch"
 )

 vcpkg_configure_cmake(
diff --git a/ports/snappy/snappy-disable-bmi.patch b/ports/snappy/snappy-disable-bmi.patch
new file mode 100644
index 0000000000..2cbb1533a8
--- /dev/null
+++ b/ports/snappy/snappy-disable-bmi.patch
@@ -0,0 +1,17 @@
+--- snappy.cc  2020-06-27 17:38:49.718993748 -0500
++++ snappy.cc  2020-06-27 17:37:57.543268213 -0500
+@@ -717,14 +717,10 @@
+ static inline uint32 ExtractLowBytes(uint32 v, int n) {
+   assert(n >= 0);
+   assert(n <= 4);
+-#if SNAPPY_HAVE_BMI2
+-  return _bzhi_u32(v, 8 * n);
+-#else
+   // This needs to be wider than uint32 otherwise `mask << 32` will be
+   // undefined.
+   uint64 mask = 0xffffffff;
+   return v & ~(mask << (8 * n));
+-#endif
+ }
+
+ static inline bool LeftShiftOverflows(uint8 value, uint32 shift) {