diff --git a/CHANGES b/CHANGES
index 3a925f945d..a794b70a72 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,4 +1,8 @@
 
+3.2.0-dev.37 | 2020-02-14 11:09:50 -0800
+
+  * Fix various format specifiers (Jon Siwek, Corelight)
+
 3.2.0-dev.36 | 2020-02-14 10:29:36 -0700
 
   * broker: include cleanup (Max Kellermann)
diff --git a/VERSION b/VERSION
index cbe056d2b7..d6c32b13ce 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.2.0-dev.36
+3.2.0-dev.37
diff --git a/src/Net.cc b/src/Net.cc
index f3d3f50c2d..744bd8a811 100644
--- a/src/Net.cc
+++ b/src/Net.cc
@@ -289,7 +289,7 @@ void net_run()
 		// starting with the first.
 		if ( ! ready.empty() || loop_counter++ % 100 == 0 )
 			{
-			DBG_LOG(DBG_MAINLOOP, "realtime=%.6f ready_count=%ld",
+			DBG_LOG(DBG_MAINLOOP, "realtime=%.6f ready_count=%zu",
 				current_time(), ready.size());
 
 			if ( ! ready.empty() )
diff --git a/src/Stats.cc b/src/Stats.cc
index 39e6148fbe..5d76dc5e80 100644
--- a/src/Stats.cc
+++ b/src/Stats.cc
@@ -135,7 +135,7 @@ void ProfileLogger::Log()
 	SessionStats s;
 	sessions->GetStats(s);
 
-	file->Write(fmt("%.06f Conns: tcp=%lu/%lu udp=%lu/%lu icmp=%lu/%lu\n",
+	file->Write(fmt("%.06f Conns: tcp=%zu/%zu udp=%zu/%zu icmp=%zu/%zu\n",
 		network_time,
 		s.num_TCP_conns, s.max_TCP_conns,
 		s.num_UDP_conns, s.max_UDP_conns,
diff --git a/src/iosource/Manager.cc b/src/iosource/Manager.cc
index 49c0fb50b8..96fcaee522 100644
--- a/src/iosource/Manager.cc
+++ b/src/iosource/Manager.cc
@@ -156,7 +156,7 @@ void Manager::FindReadySources(std::vector<IOSource*>* ready)
 			}
 		}
 
-	DBG_LOG(DBG_MAINLOOP, "timeout: %f   ready size: %ld   time_to_poll: %d\n",
+	DBG_LOG(DBG_MAINLOOP, "timeout: %f   ready size: %zu   time_to_poll: %d\n",
 		timeout, ready->size(), time_to_poll);
 
 	// If we didn't find any IOSources with zero timeouts or it's time to