diff --git a/config/apache/standardebooks.org.conf b/config/apache/standardebooks.org.conf
index 3b3917dc..17ca321a 100644
--- a/config/apache/standardebooks.org.conf
+++ b/config/apache/standardebooks.org.conf
@@ -11,6 +11,7 @@ UseCanonicalName	on
 LogLevel		warn
 AddOutputFilterByType	deflate	image/svg+xml
 AddType			application/font-woff2	.woff2
+AddType			image/avif .avif
 TraceEnable		off
 Protocols		h2 h2c http/1.1
 
@@ -19,6 +20,7 @@ ExpiresActive		On
 ExpiresByType		application/font-woff		"access plus 1 month"
 ExpiresByType		application/font-woff2		"access plus 1 month"
 ExpiresByType		application/javascript		"access plus 1 month"
+ExpiresByType		image/avif			"access plus 1 month"
 ExpiresByType		image/gif			"access plus 1 month"
 ExpiresByType		image/png			"access plus 1 month"
 ExpiresByType		image/jpeg			"access plus 1 month"
diff --git a/config/apache/standardebooks.test.conf b/config/apache/standardebooks.test.conf
index 17a9b4b7..f1c0b16e 100644
--- a/config/apache/standardebooks.test.conf
+++ b/config/apache/standardebooks.test.conf
@@ -11,6 +11,7 @@ UseCanonicalName	on
 LogLevel		warn
 AddOutputFilterByType	deflate	image/svg+xml
 AddType			application/font-woff2	.woff2
+AddType			image/avif .avif
 TraceEnable		off
 Protocols		h2 h2c http/1.1
 
@@ -19,6 +20,7 @@ ExpiresActive		On
 ExpiresByType		application/font-woff		"access plus 1 month"
 ExpiresByType		application/font-woff2		"access plus 1 month"
 ExpiresByType		application/javascript		"access plus 1 month"
+ExpiresByType		image/avif			"access plus 1 month"
 ExpiresByType		image/gif			"access plus 1 month"
 ExpiresByType		image/png			"access plus 1 month"
 ExpiresByType		image/jpeg			"access plus 1 month"