diff --git a/CHANGES b/CHANGES
index 1ac3d4e2dd..e7fef8b4cb 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,17 @@
+6.1.0-dev.272 | 2023-08-07 09:41:34 -0700
+
+  * Change VERSION variable in CMake config to ZEEK_VERSION_FULL (Tim Wojtulewicz, Corelight)
+
+  * Update bifcl and binpac for FindPackage fixes (Tim Wojtulewicz, Corelight)
+
+  * Remove usage of FindRequiredPackage (Tim Wojtulewicz, Corelight)
+
+  * Update zeekctl and cmake to deprecate FindRequiredPackage (Tim Wojtulewicz, Corelight)
+
+  * Update broker submodule for pybind11 + cmake changes (Tim Wojtulewicz, Corelight)
+
+  * ci: Bump centos-7 (Arne Welzel, Corelight)
+
 6.1.0-dev.264 | 2023-08-07 10:22:18 +0200
 
   * Suppress new tsan findings from Ubuntu 22 upgrade (Tim Wojtulewicz)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5ed58d3b99..f8e4982347 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -531,7 +531,7 @@ file(
     "setenv ZEEK_SPICY_LIBRARY_PATH \"${cmake_source_dir}/scripts/spicy\"\n"
     "setenv SPICY_BUILD_DIRECTORY \"${cmake_binary_dir}/auxil/spicy\"\n")
 
-file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/VERSION" VERSION LIMIT_COUNT 1)
+file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/VERSION" ZEEK_VERSION_FULL LIMIT_COUNT 1)
 execute_process(
     COMMAND grep "^constexpr int PLUGIN_API_VERSION"
     INPUT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/src/plugin/Plugin.h
@@ -541,7 +541,7 @@ execute_process(
 string(REGEX MATCH "^constexpr int PLUGIN_API_VERSION = ([0-9]+);" API_VERSION "${API_VERSION}")
 set(API_VERSION "${CMAKE_MATCH_1}")
 
-string(REGEX REPLACE "[.-]" " " version_numbers ${VERSION})
+string(REGEX REPLACE "[.-]" " " version_numbers ${ZEEK_VERSION_FULL})
 separate_arguments(version_numbers)
 list(GET version_numbers 0 VERSION_MAJOR)
 list(GET version_numbers 1 VERSION_MINOR)
@@ -550,7 +550,7 @@ set(VERSION_MAJ_MIN "${VERSION_MAJOR}.${VERSION_MINOR}")
 math(EXPR ZEEK_VERSION_NUMBER
      "${VERSION_MAJOR} * 10000 + ${VERSION_MINOR} * 100 + ${VERSION_PATCH}")
 
-set(VERSION_C_IDENT "${VERSION}_plugin_${API_VERSION}")
+set(VERSION_C_IDENT "${ZEEK_VERSION_FULL}_plugin_${API_VERSION}")
 string(REGEX REPLACE "-[0-9]*$" "_git" VERSION_C_IDENT "${VERSION_C_IDENT}")
 string(REGEX REPLACE "[^a-zA-Z0-9_\$]" "_" VERSION_C_IDENT "${VERSION_C_IDENT}")
 
@@ -721,8 +721,6 @@ endif ()
 # ##############################################################################
 # Dependency Configuration
 
-include(FindRequiredPackage)
-
 # Check cache value first to avoid displaying "Found sed" messages everytime
 if (NOT SED_EXE)
     find_program(SED_EXE sed)
@@ -734,15 +732,16 @@ if (NOT SED_EXE)
 endif ()
 
 list(APPEND Python_ADDITIONAL_VERSIONS 3)
-FindRequiredPackage(PythonInterp)
-FindRequiredPackage(FLEX)
-FindRequiredPackage(BISON)
-FindRequiredPackage(PCAP)
-FindRequiredPackage(OpenSSL)
+set(ZEEK_PYTHON_MIN 3.5.0)
+find_package(Python ${ZEEK_PYTHON_MIN} REQUIRED COMPONENTS Interpreter)
+find_package(FLEX REQUIRED)
+find_package(BISON 2.5 REQUIRED)
+find_package(PCAP REQUIRED)
+find_package(OpenSSL REQUIRED)
 if (NOT MSVC)
-    FindRequiredPackage(BIND)
+    find_package(BIND REQUIRED)
 endif ()
-FindRequiredPackage(ZLIB)
+find_package(ZLIB REQUIRED)
 
 if (NOT BINARY_PACKAGING_MODE)
     # TODO: Broker seems to always turn on static libraries. We don't want that for Spicy by default.
@@ -773,7 +772,7 @@ endif ()
 if (ZEEK_PYTHON_DIR)
     set(py_mod_install_dir ${ZEEK_PYTHON_DIR})
 elseif (ZEEK_PYTHON_PREFIX)
-    set(pyver ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR})
+    set(pyver ${Python_VERSION_MAJOR}.${Python_VERSION_MINOR})
     set(py_mod_install_dir ${ZEEK_PYTHON_PREFIX}/lib/python${pyver}/site-packages)
 elseif (ZEEK_PYTHON_HOME)
     set(py_mod_install_dir ${ZEEK_PYTHON_HOME}/lib/python)
@@ -801,7 +800,8 @@ if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/auxil/binpac/CMakeLists.txt)
     # TODO in ZeekPluginConfig.cmake.in.
     set(BINPAC_EXE_PATH "${CMAKE_BINARY_DIR}/auxil/binpac/src/binpac${CMAKE_EXECUTABLE_SUFFIX}")
 endif ()
-FindRequiredPackage(BinPAC)
+
+find_package(BinPAC REQUIRED)
 
 # Add an alias (used by our plugin setup).
 add_executable(Zeek::BinPAC ALIAS binpac)
@@ -841,25 +841,6 @@ if (ENABLE_JEMALLOC)
     endif ()
 endif ()
 
-if (BISON_VERSION AND BISON_VERSION VERSION_LESS 2.5)
-    set(MISSING_PREREQS true)
-    list(APPEND MISSING_PREREQ_DESCS
-         " Could not find prerequisite package Bison >= 2.5, found: ${BISON_VERSION}")
-endif ()
-
-if (MISSING_PREREQS)
-    foreach (prereq ${MISSING_PREREQ_DESCS})
-        message(SEND_ERROR ${prereq})
-    endforeach ()
-    message(FATAL_ERROR "Configuration aborted due to missing prerequisites")
-endif ()
-
-set(ZEEK_PYTHON_MIN 3.5.0)
-
-if (PYTHON_VERSION_STRING VERSION_LESS ${ZEEK_PYTHON_MIN})
-    message(FATAL_ERROR "Python ${ZEEK_PYTHON_MIN} or greater is required.")
-endif ()
-
 add_subdirectory(auxil/paraglob)
 if (MSVC)
     cmake_policy(SET CMP0079 NEW)
@@ -1307,7 +1288,7 @@ endif ()
 # has already configured packaging
 if ("${PROJECT_SOURCE_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
     include(ConfigurePackaging)
-    ConfigurePackaging(${VERSION})
+    ConfigurePackaging(${ZEEK_VERSION_FULL})
 endif ()
 
 # Refers back to the "distribution prefix". This is the source tree when
diff --git a/VERSION b/VERSION
index 43026a2513..5c7d0d66e9 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.1.0-dev.264
+6.1.0-dev.272
diff --git a/auxil/bifcl b/auxil/bifcl
index a4aadc5d64..c7bf54c587 160000
--- a/auxil/bifcl
+++ b/auxil/bifcl
@@ -1 +1 @@
-Subproject commit a4aadc5d644e9b13dd2ff76f3d1ed269c575ce90
+Subproject commit c7bf54c587439d3bcb16d53b0d77a702e48d2526
diff --git a/auxil/binpac b/auxil/binpac
index 1e0a4a7e77..84b730fdcc 160000
--- a/auxil/binpac
+++ b/auxil/binpac
@@ -1 +1 @@
-Subproject commit 1e0a4a7e77ace47a73205973cb896ad5027f62af
+Subproject commit 84b730fdcc5b983c65c6226ec092aee66c486680
diff --git a/auxil/broker b/auxil/broker
index f338a5f6db..8dacaa3582 160000
--- a/auxil/broker
+++ b/auxil/broker
@@ -1 +1 @@
-Subproject commit f338a5f6db54d0cf8db4708d6656b1856c8d59b4
+Subproject commit 8dacaa358299a95e3c38fe479dbc348a69ed60a4
diff --git a/auxil/zeekctl b/auxil/zeekctl
index 625b169862..81e8c48fea 160000
--- a/auxil/zeekctl
+++ b/auxil/zeekctl
@@ -1 +1 @@
-Subproject commit 625b1698628efbf72629624e0352280de9784422
+Subproject commit 81e8c48fea6171d49e66e371ae46437c7ee63a74
diff --git a/cmake b/cmake
index 50c5bf96c3..7a8069c2ee 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit 50c5bf96c32038014f8517479c5ce3908c3b6100
+Subproject commit 7a8069c2ee84a82119ce83033454e22942043570
diff --git a/cmake_templates/zeek-config.in b/cmake_templates/zeek-config.in
index 0940f6fe09..c78ea5e855 100755
--- a/cmake_templates/zeek-config.in
+++ b/cmake_templates/zeek-config.in
@@ -14,7 +14,7 @@ prefix="@CMAKE_INSTALL_PREFIX@"
 python_dir="@PY_MOD_INSTALL_DIR@"
 script_dir="@ZEEK_SCRIPT_INSTALL_PATH@"
 site_dir="@ZEEK_SCRIPT_INSTALL_PATH@/site"
-version="@VERSION@"
+version="@ZEEK_VERSION_FULL@"
 zeek_dist="@ZEEK_DIST@"
 zeekpath="@DEFAULT_ZEEKPATH@"
 
diff --git a/cmake_templates/zeek-version.h.in b/cmake_templates/zeek-version.h.in
index f09f9ce5a7..95668aa1f8 100644
--- a/cmake_templates/zeek-version.h.in
+++ b/cmake_templates/zeek-version.h.in
@@ -3,7 +3,7 @@
 #pragma once
 
 /* Version number of package */
-#define VERSION "@VERSION@"
+#define VERSION "@ZEEK_VERSION_FULL@"
 
 // Zeek version number.
 // This is the result of (major * 10000 + minor * 100 + patch)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3029445631..8552ad3105 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -256,7 +256,7 @@ cmake_policy(POP)
 add_custom_command(
     OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/DebugCmdConstants.h
            ${CMAKE_CURRENT_BINARY_DIR}/DebugCmdInfoConstants.cc
-    COMMAND ${PYTHON_EXECUTABLE} ARGS ${CMAKE_CURRENT_SOURCE_DIR}/make_dbg_constants.py
+    COMMAND ${Python_EXECUTABLE} ARGS ${CMAKE_CURRENT_SOURCE_DIR}/make_dbg_constants.py
             ${CMAKE_CURRENT_SOURCE_DIR}/DebugCmdInfoConstants.in
     DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/make_dbg_constants.py
             ${CMAKE_CURRENT_SOURCE_DIR}/DebugCmdInfoConstants.in
diff --git a/src/version.c.in b/src/version.c.in
index e7508c8415..9c129253a5 100644
--- a/src/version.c.in
+++ b/src/version.c.in
@@ -1,7 +1,7 @@
 
 #include "zeek/zeek-version.h"
 
-char version[] = "@VERSION@";
+char version[] = "@ZEEK_VERSION_FULL@";
 
 // A C function that has the current version built into its name.
 // One can link a shared library against this to ensure that it won't