diff --git a/src/event.bif b/src/event.bif
index d1ddf29d52..609cbf02b6 100644
--- a/src/event.bif
+++ b/src/event.bif
@@ -851,3 +851,8 @@ event new_event%(name: string, params: call_argument_vector%);
 
 ## Shows an IP address anonymization mapping.
 event anonymization_mapping%(orig: addr, mapped: addr%);
+
+## An event that signals a pcap file is done being processed.
+##
+## path: the filesystem path of the pcap file
+event Pcap::file_done%(path: string%);
diff --git a/src/iosource/pcap/Source.cc b/src/iosource/pcap/Source.cc
index eb13b4d024..52d87bd3b8 100644
--- a/src/iosource/pcap/Source.cc
+++ b/src/iosource/pcap/Source.cc
@@ -6,6 +6,8 @@
 #include "iosource/Packet.h"
 #include "iosource/BPF_Program.h"
 
+#include "Event.h"
+
 #include "pcap.bif.h"
 
 #ifdef HAVE_PCAP_INT_H
@@ -47,6 +49,9 @@ void PcapSource::Close()
 	last_data = nullptr;
 
 	Closed();
+
+	if ( Pcap::file_done )
+		mgr.QueueEventFast(Pcap::file_done, {new StringVal(props.path)});
 	}
 
 void PcapSource::OpenLive()
diff --git a/testing/btest/Baseline/core.pcap_file_done/out b/testing/btest/Baseline/core.pcap_file_done/out
new file mode 100644
index 0000000000..d561ae9921
--- /dev/null
+++ b/testing/btest/Baseline/core.pcap_file_done/out
@@ -0,0 +1 @@
+pcap file done, /home/jon/pro/zeek/zeek/testing/btest/Traces/http/get.trace
diff --git a/testing/btest/core/pcap_file_done.zeek b/testing/btest/core/pcap_file_done.zeek
new file mode 100644
index 0000000000..b05680b121
--- /dev/null
+++ b/testing/btest/core/pcap_file_done.zeek
@@ -0,0 +1,7 @@
+# @TEST-EXEC: zeek -b -r $TRACES/http/get.trace %INPUT >out
+# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff out
+
+event Pcap::file_done(path: string)
+	{
+	print "pcap file done", path;
+	}