diff --git a/ci/test/06_script_b.sh b/ci/test/06_script_b.sh
index 77358f93d95..29f30cfe9eb 100755
--- a/ci/test/06_script_b.sh
+++ b/ci/test/06_script_b.sh
@@ -40,8 +40,10 @@ if [ "${RUN_TIDY}" = "true" ]; then
   export P_CI_DIR="${BASE_BUILD_DIR}/bitcoin-$HOST/"
   CI_EXEC "python3 ${DIR_IWYU}/include-what-you-use/iwyu_tool.py"\
           " src/compat"\
+          " src/dbwrapper.cpp"\
           " src/init"\
           " src/kernel/mempool_persist.cpp"\
+          " src/node/chainstate.cpp"\
           " src/policy/feerate.cpp"\
           " src/policy/packages.cpp"\
           " src/policy/settings.cpp"\
diff --git a/src/bench/checkblock.cpp b/src/bench/checkblock.cpp
index 52e5cb743fb..53aa470042b 100644
--- a/src/bench/checkblock.cpp
+++ b/src/bench/checkblock.cpp
@@ -8,6 +8,7 @@
 #include <chainparams.h>
 #include <consensus/validation.h>
 #include <streams.h>
+#include <util/system.h>
 #include <validation.h>
 
 // These are the two major time-sinks which happen after we have fully received
diff --git a/src/dbwrapper.cpp b/src/dbwrapper.cpp
index d4a8e4f35ab..4dbc8399416 100644
--- a/src/dbwrapper.cpp
+++ b/src/dbwrapper.cpp
@@ -4,15 +4,28 @@
 
 #include <dbwrapper.h>
 
-#include <memory>
+#include <fs.h>
+#include <logging.h>
 #include <random.h>
+#include <tinyformat.h>
+#include <util/strencodings.h>
+#include <util/system.h>
 
+#include <algorithm>
+#include <cassert>
+#include <cstdarg>
+#include <cstdint>
+#include <cstdio>
 #include <leveldb/cache.h>
+#include <leveldb/db.h>
 #include <leveldb/env.h>
 #include <leveldb/filter_policy.h>
 #include <leveldb/helpers/memenv/memenv.h>
-#include <stdint.h>
-#include <algorithm>
+#include <leveldb/iterator.h>
+#include <leveldb/options.h>
+#include <leveldb/status.h>
+#include <memory>
+#include <optional>
 
 class CBitcoinLevelDBLogger : public leveldb::Logger {
 public:
diff --git a/src/dbwrapper.h b/src/dbwrapper.h
index cef8426d610..665eaa0e986 100644
--- a/src/dbwrapper.h
+++ b/src/dbwrapper.h
@@ -7,14 +7,26 @@
 
 #include <clientversion.h>
 #include <fs.h>
+#include <logging.h>
 #include <serialize.h>
 #include <span.h>
 #include <streams.h>
-#include <util/strencodings.h>
-#include <util/system.h>
 
+#include <cstddef>
+#include <cstdint>
+#include <exception>
 #include <leveldb/db.h>
+#include <leveldb/iterator.h>
+#include <leveldb/options.h>
+#include <leveldb/slice.h>
+#include <leveldb/status.h>
 #include <leveldb/write_batch.h>
+#include <stdexcept>
+#include <string>
+#include <vector>
+namespace leveldb {
+class Env;
+}
 
 static const size_t DBWRAPPER_PREALLOC_KEY_SIZE = 64;
 static const size_t DBWRAPPER_PREALLOC_VALUE_SIZE = 1024;
diff --git a/src/index/base.cpp b/src/index/base.cpp
index 4f399620e4d..2368189da28 100644
--- a/src/index/base.cpp
+++ b/src/index/base.cpp
@@ -12,6 +12,7 @@
 #include <shutdown.h>
 #include <tinyformat.h>
 #include <util/syscall_sandbox.h>
+#include <util/system.h>
 #include <util/thread.h>
 #include <util/translation.h>
 #include <validation.h> // For g_chainman
diff --git a/src/index/coinstatsindex.cpp b/src/index/coinstatsindex.cpp
index b722118b2ec..b9029e946ab 100644
--- a/src/index/coinstatsindex.cpp
+++ b/src/index/coinstatsindex.cpp
@@ -10,6 +10,7 @@
 #include <serialize.h>
 #include <txdb.h>
 #include <undo.h>
+#include <util/system.h>
 #include <validation.h>
 
 using kernel::CCoinsStats;
diff --git a/src/node/chainstate.cpp b/src/node/chainstate.cpp
index 54ba5b79663..60a60f86656 100644
--- a/src/node/chainstate.cpp
+++ b/src/node/chainstate.cpp
@@ -4,10 +4,23 @@
 
 #include <node/chainstate.h>
 
+#include <chain.h>
+#include <coins.h>
 #include <consensus/params.h>
 #include <node/blockstorage.h>
+#include <sync.h>
+#include <threadsafety.h>
+#include <txdb.h>
+#include <uint256.h>
+#include <util/time.h>
 #include <validation.h>
 
+#include <algorithm>
+#include <atomic>
+#include <cassert>
+#include <memory>
+#include <vector>
+
 namespace node {
 std::optional<ChainstateLoadingError> LoadChainstate(bool fReset,
                                                      ChainstateManager& chainman,
diff --git a/src/node/chainstate.h b/src/node/chainstate.h
index ff7935e8e06..5c495da229d 100644
--- a/src/node/chainstate.h
+++ b/src/node/chainstate.h
@@ -11,9 +11,6 @@
 
 class ChainstateManager;
 class CTxMemPool;
-namespace Consensus {
-struct Params;
-} // namespace Consensus
 
 namespace node {
 enum class ChainstateLoadingError {
diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index 42c8b077632..2b6711ca406 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -19,6 +19,7 @@
 #include <validation.h> // for DEFAULT_SCRIPTCHECK_THREADS and MAX_SCRIPTCHECK_THREADS
 #include <netbase.h>
 #include <txdb.h> // for -dbcache defaults
+#include <util/system.h>
 
 #include <chrono>
 
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 52d5eaaa508..88ceeadea4c 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -39,6 +39,7 @@
 #include <univalue.h>
 #include <util/check.h>
 #include <util/strencodings.h>
+#include <util/system.h>
 #include <util/translation.h>
 #include <validation.h>
 #include <validationinterface.h>
diff --git a/src/rpc/fees.cpp b/src/rpc/fees.cpp
index dd1a6441a08..41f386d4430 100644
--- a/src/rpc/fees.cpp
+++ b/src/rpc/fees.cpp
@@ -6,7 +6,6 @@
 #include <core_io.h>
 #include <policy/feerate.h>
 #include <policy/fees.h>
-#include <policy/policy.h>
 #include <policy/settings.h>
 #include <rpc/protocol.h>
 #include <rpc/request.h>
@@ -16,7 +15,6 @@
 #include <txmempool.h>
 #include <univalue.h>
 #include <util/fees.h>
-#include <util/system.h>
 
 #include <algorithm>
 #include <array>
diff --git a/src/rpc/mempool.cpp b/src/rpc/mempool.cpp
index d59ff3f75c5..0ae10b6c39e 100644
--- a/src/rpc/mempool.cpp
+++ b/src/rpc/mempool.cpp
@@ -20,6 +20,7 @@
 #include <txmempool.h>
 #include <univalue.h>
 #include <util/moneystr.h>
+#include <util/time.h>
 
 using kernel::DumpMempool;
 
diff --git a/src/txdb.h b/src/txdb.h
index faa543b4120..a04596f7bbe 100644
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -8,6 +8,7 @@
 
 #include <coins.h>
 #include <dbwrapper.h>
+#include <sync.h>
 
 #include <memory>
 #include <optional>