diff --git a/cmake/abseil-cpp.cmake b/cmake/abseil-cpp.cmake
index 8d5a1b0..b52a36a 100644
--- a/cmake/abseil-cpp.cmake
+++ b/cmake/abseil-cpp.cmake
@@ -14,7 +14,7 @@
 
 FetchContent_Declare(absl
   GIT_REPOSITORY https://github.com/abseil/abseil-cpp
-  GIT_TAG        3dccef2a91243460364312d3e1100ff1d573fb1d # 2022-04-20
+  GIT_TAG        ab2e2c4f6062999afaf960759dfccb77f350c702 # 2022-09-15
 )
 set(ABSL_CXX_STANDARD ${SAPI_CXX_STANDARD} CACHE STRING "" FORCE)
 set(ABSL_PROPAGATE_CXX_STD ON CACHE BOOL "" FORCE)
diff --git a/cmake/protobuf.cmake b/cmake/protobuf.cmake
index 2abbca5..7821b82 100644
--- a/cmake/protobuf.cmake
+++ b/cmake/protobuf.cmake
@@ -14,21 +14,16 @@
 
 FetchContent_Declare(protobuf
   GIT_REPOSITORY https://github.com/protocolbuffers/protobuf.git
-  GIT_TAG        v3.15.8  # 2021-04-08
-  GIT_SUBMODULES "cmake" # Workaround for CMake #20579
-  SOURCE_SUBDIR  cmake
+  GIT_TAG        v3.21.6  # 2022-09-14
 )
 
+set(protobuf_ABSL_PROVIDER "package" CACHE STRING "" FORCE)
 set(protobuf_BUILD_TESTS OFF CACHE BOOL "" FORCE)
 set(protobuf_BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
+set(protobuf_INSTALL OFF CACHE BOOL "" FORCE)
 set(protobuf_WITH_ZLIB OFF CACHE BOOL "" FORCE)
 
-FetchContent_GetProperties(protobuf)
-if(NOT protobuf_POPULATED)
-  FetchContent_Populate(protobuf)
-  add_subdirectory("${protobuf_SOURCE_DIR}/cmake"
-                  "${protobuf_BINARY_DIR}")
-endif()
+FetchContent_MakeAvailable(protobuf)
 
 sapi_check_target(protobuf::libprotobuf)
 sapi_check_target(protobuf::protoc)
diff --git a/sandboxed_api/bazel/sapi_deps.bzl b/sandboxed_api/bazel/sapi_deps.bzl
index 2cb28bb..646eba6 100644
--- a/sandboxed_api/bazel/sapi_deps.bzl
+++ b/sandboxed_api/bazel/sapi_deps.bzl
@@ -37,9 +37,9 @@ def sapi_deps():
     maybe(
         http_archive,
         name = "com_google_absl",
-        sha256 = "1a87de20498817e4a8b9f146214bb92d0cb17b7ad8a65678eada7b78ec900e14",  # 2022-04-20
-        strip_prefix = "abseil-cpp-3dccef2a91243460364312d3e1100ff1d573fb1d",
-        urls = ["https://github.com/abseil/abseil-cpp/archive/3dccef2a91243460364312d3e1100ff1d573fb1d.zip"],
+        sha256 = "ef76248ccea6dd05762cfdc9a5b234222e1f3b38d31325e35d4172559eac7935",  # 2022-09-15
+        strip_prefix = "abseil-cpp-ab2e2c4f6062999afaf960759dfccb77f350c702",
+        urls = ["https://github.com/abseil/abseil-cpp/archive/ab2e2c4f6062999afaf960759dfccb77f350c702.zip"],
     )
     maybe(
         http_archive,
@@ -83,9 +83,9 @@ def sapi_deps():
     maybe(
         http_archive,
         name = "com_google_protobuf",
-        sha256 = "dd513a79c7d7e45cbaeaf7655289f78fd6b806e52dbbd7018ef4e3cf5cff697a",  # 2021-04-08
-        strip_prefix = "protobuf-3.15.8",
-        urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.15.8.zip"],
+        sha256 = "0ac0d92cba957fdfc77cab689ffc56d52ce2ff89ebcc384e4e682e6f9d218071",  # 2022-09-14
+        strip_prefix = "protobuf-3.21.6",
+        urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.21.6.zip"],
     )
 
     # libcap