diff --git a/.clang-tidy b/.clang-tidy
index 8ee8b690a0..1683ac36a1 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -6,6 +6,7 @@ Checks: [-*,
          modernize-make-unique,
          modernize-min-max-use-initializer-list,
          modernize-pass-by-value,
+         modernize-redundant-void-arg,
 
          # Enable a very limited number of the cppcoreguidelines checkers.
          # See the notes for some of the rest of them below.
diff --git a/src/RE.cc b/src/RE.cc
index d30c81d57f..5b3aa944ea 100644
--- a/src/RE.cc
+++ b/src/RE.cc
@@ -19,7 +19,7 @@ zeek::detail::NFA_Machine* zeek::detail::nfa = nullptr;
 bool zeek::detail::case_insensitive = false;
 bool zeek::detail::re_single_line = false;
 
-extern int RE_parse(void);
+extern int RE_parse();
 extern void RE_set_input(const char* str);
 extern void RE_done_with_scan();
 
diff --git a/src/analyzer/protocol/bittorrent/BitTorrentTracker.cc b/src/analyzer/protocol/bittorrent/BitTorrentTracker.cc
index dc4b8acce4..4e9398519a 100644
--- a/src/analyzer/protocol/bittorrent/BitTorrentTracker.cc
+++ b/src/analyzer/protocol/bittorrent/BitTorrentTracker.cc
@@ -195,7 +195,7 @@ void BitTorrentTracker_Analyzer::EndpointEOF(bool is_orig) {
     analyzer::tcp::TCP_ApplicationAnalyzer::EndpointEOF(is_orig);
 }
 
-void BitTorrentTracker_Analyzer::InitBencParser(void) {
+void BitTorrentTracker_Analyzer::InitBencParser() {
     benc_stack.clear();
     benc_count.clear();
 
@@ -304,7 +304,7 @@ bool BitTorrentTracker_Analyzer::ParseRequest(char* line) {
 
 void BitTorrentTracker_Analyzer::RequestGet(char* uri) { req_val_uri = new StringVal(uri); }
 
-void BitTorrentTracker_Analyzer::EmitRequest(void) {
+void BitTorrentTracker_Analyzer::EmitRequest() {
     AnalyzerConfirmation();
 
     if ( bt_tracker_request )
@@ -443,7 +443,7 @@ void BitTorrentTracker_Analyzer::ResponseBenc(int name_len, char* name, detail::
     res_val_benc->Assign(std::move(name_), std::move(benc_value));
 }
 
-void BitTorrentTracker_Analyzer::ResponseBody(void) {
+void BitTorrentTracker_Analyzer::ResponseBody() {
     switch ( ResponseParseBenc() ) {
         case 0:
             EmitResponse();
@@ -466,7 +466,7 @@ void BitTorrentTracker_Analyzer::ResponseBody(void) {
         }                                                                                                              \
     }
 
-int BitTorrentTracker_Analyzer::ResponseParseBenc(void) {
+int BitTorrentTracker_Analyzer::ResponseParseBenc() {
     auto INC_COUNT = [this]() {
         unsigned int count = benc_count.back();
         benc_count.pop_back();
@@ -696,7 +696,7 @@ int BitTorrentTracker_Analyzer::ResponseParseBenc(void) {
     return -2; // need more data
 }
 
-void BitTorrentTracker_Analyzer::EmitResponse(void) {
+void BitTorrentTracker_Analyzer::EmitResponse() {
     AnalyzerConfirmation();
 
     if ( bt_tracker_response )