diff --git a/NEWS b/NEWS
index 2c4ec1f2c5..7c010db247 100644
--- a/NEWS
+++ b/NEWS
@@ -12,6 +12,10 @@ New Functionality
 Changed Functionality
 ---------------------
 
+- The traditional TSV Zeek logs are now valid UTF8 by default. It's possible
+  to revert to the previous behavior by setting ``LogAscii::enable_utf_8`` to
+  false.
+
 Removed Functionality
 ---------------------
 
diff --git a/scripts/base/frameworks/logging/writers/ascii.zeek b/scripts/base/frameworks/logging/writers/ascii.zeek
index 61cf3f59c9..ce37a32537 100644
--- a/scripts/base/frameworks/logging/writers/ascii.zeek
+++ b/scripts/base/frameworks/logging/writers/ascii.zeek
@@ -38,7 +38,7 @@ export {
 	## written into logs.
 	##
 	## This option is also available as a per-filter ``$config`` option.
-	const enable_utf_8 = F &redef;
+	const enable_utf_8 = T &redef;
 
 	## Define the gzip level to compress the logs.  If 0, then no gzip
 	## compression is performed. Enabling compression also changes
diff --git a/testing/btest/Baseline/scripts.base.files.unified2.alert/unified2.log b/testing/btest/Baseline/scripts.base.files.unified2.alert/unified2.log
index 6b99c4356d..17516f3b15 100644
--- a/testing/btest/Baseline/scripts.base.files.unified2.alert/unified2.log
+++ b/testing/btest/Baseline/scripts.base.files.unified2.alert/unified2.log
@@ -7,6 +7,6 @@
 #open XXXX-XX-XX-XX-XX-XX
 #fields	ts	id.src_ip	id.src_p	id.dst_ip	id.dst_p	sensor_id	signature_id	signature	generator_id	generator	signature_revision	classification_id	classification	priority_id	event_id	packet
 #types	time	addr	port	addr	port	count	count	string	count	string	count	count	string	count	count	string
-XXXXXXXXXX.XXXXXX	192.168.1.72	50185	74.125.225.49	80	0	2003058	ET MALWARE 180solutions (Zango) Spyware Installer Download	1	snort general alert	5	21	trojan-activity	1	2	\xd80bH\xc5\xb5x\xca9\xb7\xe4r\x08\x00E\x10\x00\\\x1a\xce@\x00@\x062\x1f\xc0\xa8\x01HJ}\xe11\xc4\x09\x00P*\xa8bv]z/\xde\x80\x18\x82+\x88,\x00\x00\x01\x01\x08\x0a\x17J\x83Q\xfe\xad\xac\x1aGET /Zango/ZangoInstaller.exe HTTP/1.0\x0d\x0a
-XXXXXXXXXX.XXXXXX	192.168.1.72	49862	199.47.216.144	80	0	2012647	ET POLICY Dropbox.com Offsite File Backup in Use	1	snort general alert	3	33	policy-violation	1	3	\xd80bH\xc5\xb5x\xca9\xb7\xe4r\x08\x00E\x00\x00\xf8Q\xdf@\x00@\x06\x86p\xc0\xa8\x01H\xc7/\xd8\x90\xc2\xc6\x00P\x9cm\x97U\xf07\x084\x80\x18\x82\x18%<\x00\x00\x01\x01\x08\x0a\x17J\xd7\xde\x00\x92\x81\xc5GET /subscribe?host_int=43112345&ns_map=123456_1234524412104916591&ts=1323827344 HTTP/1.1\x0d\x0aHost: notify1.dropbox.com\x0d\x0aAccept-Encoding: identity\x0d\x0aConnection: keep-alive\x0d\x0aX-Dropbox-Locale: en_US\x0d\x0a\x0d\x0a
+XXXXXXXXXX.XXXXXX	192.168.1.72	50185	74.125.225.49	80	0	2003058	ET MALWARE 180solutions (Zango) Spyware Installer Download	1	snort general alert	5	21	trojan-activity	1	2	\xd80bHŵx\xca9\xb7\xe4r\x08\x00E\x10\x00\\\x1a\xce@\x00@\x062\x1f\xc0\xa8\x01HJ}\xe11\xc4\x09\x00P*\xa8bv]z/ހ\x18\x82+\x88,\x00\x00\x01\x01\x08\x0a\x17J\x83Q\xfe\xad\xac\x1aGET /Zango/ZangoInstaller.exe HTTP/1.0\x0d\x0a
+XXXXXXXXXX.XXXXXX	192.168.1.72	49862	199.47.216.144	80	0	2012647	ET POLICY Dropbox.com Offsite File Backup in Use	1	snort general alert	3	33	policy-violation	1	3	\xd80bHŵx\xca9\xb7\xe4r\x08\x00E\x00\x00\xf8Q\xdf@\x00@\x06\x86p\xc0\xa8\x01H\xc7/ؐ\xc2\xc6\x00P\x9cm\x97U\xf07\x084\x80\x18\x82\x18%<\x00\x00\x01\x01\x08\x0a\x17J\xd7\xde\x00\x92\x81\xc5GET /subscribe?host_int=43112345&ns_map=123456_1234524412104916591&ts=1323827344 HTTP/1.1\x0d\x0aHost: notify1.dropbox.com\x0d\x0aAccept-Encoding: identity\x0d\x0aConnection: keep-alive\x0d\x0aX-Dropbox-Locale: en_US\x0d\x0a\x0d\x0a
 #close XXXX-XX-XX-XX-XX-XX
diff --git a/testing/btest/scripts/base/frameworks/logging/ascii-escape-binary.zeek b/testing/btest/scripts/base/frameworks/logging/ascii-escape-binary.zeek
index 5535f83276..ef8461abfd 100644
--- a/testing/btest/scripts/base/frameworks/logging/ascii-escape-binary.zeek
+++ b/testing/btest/scripts/base/frameworks/logging/ascii-escape-binary.zeek
@@ -2,6 +2,8 @@
 # @TEST-EXEC: btest-diff test.log
 # @TEST-EXEC: btest-diff output
 
+redef LogAscii::enable_utf_8 = F;
+
 module Test;
 
 export {
diff --git a/testing/external/commit-hash.zeek-testing b/testing/external/commit-hash.zeek-testing
index 5f05400db4..b14748e754 100644
--- a/testing/external/commit-hash.zeek-testing
+++ b/testing/external/commit-hash.zeek-testing
@@ -1 +1 @@
-6816110d6af23562c837298ef8b65cb8a9d5b73a
+465b0bb55451934b211dda72ad388496b3a2d1d7