diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6354b0ee..8b5b840b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,9 +35,7 @@ set(CAPNPROTO_CLANG_INCOMPATIBLE FALSE)
 # https://github.com/capnproto/capnproto/blob/master/security-advisories/2022-11-30-0-pointer-list-bounds.md
 # https://capnproto.org/news/2022-11-30-CVE-2022-46149-security-advisory.html
 # https://dwrensha.github.io/capnproto-rust/2022/11/30/out_of_bounds_memory_access_bug.html
-if(CapnProto_VERSION STREQUAL "0.7.0"
-   OR CapnProto_VERSION STREQUAL "0.8.0"
-   OR CapnProto_VERSION STREQUAL "0.9.0"
+if(CapnProto_VERSION STREQUAL "0.9.0"
    OR CapnProto_VERSION STREQUAL "0.9.1"
    OR CapnProto_VERSION STREQUAL "0.10.0"
    OR CapnProto_VERSION STREQUAL "0.10.1"
diff --git a/cmake/compat_config.cmake b/cmake/compat_config.cmake
index f9d3004f..32a9d6dd 100644
--- a/cmake/compat_config.cmake
+++ b/cmake/compat_config.cmake
@@ -15,45 +15,3 @@ endif()
 if (NOT DEFINED CAPNPC_OUTPUT_DIR)
   set(CAPNPC_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}")
 endif()
-
-# CMake target definitions for backwards compatibility with Ubuntu bionic
-# capnproto 0.6.1 package (https://packages.ubuntu.com/bionic/libcapnp-dev)
-# https://github.com/bitcoin-core/libmultiprocess/issues/27
-
-if (NOT DEFINED CAPNP_LIB_CAPNPC AND DEFINED CAPNP_LIB_CAPNP-RPC)
-  string(REPLACE "-rpc" "c" CAPNP_LIB_CAPNPC "${CAPNP_LIB_CAPNP-RPC}")
-endif()
-
-if (NOT DEFINED CapnProto_capnpc_IMPORTED_LOCATION AND DEFINED CapnProto_capnp-rpc_IMPORTED_LOCATION)
-  string(REPLACE "-rpc" "c" CapnProto_capnpc_IMPORTED_LOCATION "${CapnProto_capnp-rpc_IMPORTED_LOCATION}")
-endif()
-
-if (NOT TARGET CapnProto::capnp AND DEFINED CAPNP_LIB_CAPNP)
-  add_library(CapnProto::capnp SHARED IMPORTED)
-  set_target_properties(CapnProto::capnp PROPERTIES IMPORTED_LOCATION "${CAPNP_LIB_CAPNP}")
-endif()
-
-if (NOT TARGET CapnProto::capnpc AND DEFINED CAPNP_LIB_CAPNPC)
-  add_library(CapnProto::capnpc SHARED IMPORTED)
-  set_target_properties(CapnProto::capnpc PROPERTIES IMPORTED_LOCATION "${CAPNP_LIB_CAPNPC}")
-endif()
-
-if (NOT TARGET CapnProto::capnpc AND DEFINED CapnProto_capnpc_IMPORTED_LOCATION)
-  add_library(CapnProto::capnpc SHARED IMPORTED)
-  set_target_properties(CapnProto::capnpc PROPERTIES IMPORTED_LOCATION "${CapnProto_capnpc_IMPORTED_LOCATION}")
-endif()
-
-if (NOT TARGET CapnProto::capnp-rpc AND DEFINED CAPNP_LIB_CAPNP-RPC)
-  add_library(CapnProto::capnp-rpc SHARED IMPORTED)
-  set_target_properties(CapnProto::capnp-rpc PROPERTIES IMPORTED_LOCATION "${CAPNP_LIB_CAPNP-RPC}")
-endif()
-
-if (NOT TARGET CapnProto::kj AND DEFINED CAPNP_LIB_KJ)
-  add_library(CapnProto::kj SHARED IMPORTED)
-  set_target_properties(CapnProto::kj PROPERTIES IMPORTED_LOCATION "${CAPNP_LIB_KJ}")
-endif()
-
-if (NOT TARGET CapnProto::kj-async AND DEFINED CAPNP_LIB_KJ-ASYNC)
-  add_library(CapnProto::kj-async SHARED IMPORTED)
-  set_target_properties(CapnProto::kj-async PROPERTIES IMPORTED_LOCATION "${CAPNP_LIB_KJ-ASYNC}")
-endif()
diff --git a/shell.nix b/shell.nix
index 1a4614e3..e04518f3 100644
--- a/shell.nix
+++ b/shell.nix
@@ -17,10 +17,6 @@ let
     };
   };
   capnprotoHashes = {
-    "0.7.0" = "sha256-Y/7dUOQPDHjniuKNRw3j8dG1NI9f/aRWpf8V0WzV9k8=";
-    "0.7.1" = "sha256-3cBpVmpvCXyqPUXDp12vCFCk32ZXWpkdOliNH37UwWE=";
-    "0.8.0" = "sha256-rfiqN83begjJ9eYjtr21/tk1GJBjmeVfa3C3dZBJ93w=";
-    "0.8.1" = "sha256-OZqNVYdyszro5rIe+w6YN00g6y8U/1b8dKYc214q/2o=";
     "0.9.0" = "sha256-yhbDcWUe6jp5PbIXzn5EoKabXiWN8lnS08hyfxUgEQ0=";
     "0.9.2" = "sha256-BspWOPZcP5nCTvmsDE62Zutox+aY5pw42d6hpH3v4cM=";
     "0.10.0" = "sha256-++F4l54OMTDnJ+FO3kV/Y/VLobKVRk461dopanuU3IQ=";