diff --git a/lucene/ivy-versions.properties b/lucene/ivy-versions.properties
index 446cfb5539e..38e2d464bfc 100644
--- a/lucene/ivy-versions.properties
+++ b/lucene/ivy-versions.properties
@@ -305,7 +305,7 @@ org.ow2.asm.version = 7.2
 /org.ow2.asm/asm = ${org.ow2.asm.version}
 /org.ow2.asm/asm-commons = ${org.ow2.asm.version}
 
-org.restlet.jee.version = 2.3.0
+org.restlet.jee.version = 2.4.0
 /org.restlet.jee/org.restlet = ${org.restlet.jee.version}
 /org.restlet.jee/org.restlet.ext.servlet = ${org.restlet.jee.version}
 
diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index fcbac162a3e..40bd76cecb5 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -203,6 +203,8 @@ Improvements
 
 * SOLR-14132: Upgrade Angular JS 1.3.8 to 1.7.9 (Kevin Risden)
 
+* SOLR-14221: Upgrade restlet to version 2.4.0 (janhoy)
+
 Optimizations
 ---------------------
 
diff --git a/solr/licenses/org.restlet-2.3.0.jar.sha1 b/solr/licenses/org.restlet-2.3.0.jar.sha1
deleted file mode 100644
index 77e949d323e..00000000000
--- a/solr/licenses/org.restlet-2.3.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-4c5d184e23fa729726668a90dc7338d80c4e7e6f
diff --git a/solr/licenses/org.restlet-2.4.0.jar.sha1 b/solr/licenses/org.restlet-2.4.0.jar.sha1
new file mode 100644
index 00000000000..469dee0d216
--- /dev/null
+++ b/solr/licenses/org.restlet-2.4.0.jar.sha1
@@ -0,0 +1 @@
+80f34dd07c6f515f226aa1050908179679625821
diff --git a/solr/licenses/org.restlet.ext.servlet-2.3.0.jar.sha1 b/solr/licenses/org.restlet.ext.servlet-2.3.0.jar.sha1
deleted file mode 100644
index 32c31ad33cc..00000000000
--- a/solr/licenses/org.restlet.ext.servlet-2.3.0.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-9303e20d0397c0304342943560c3a1693fd7ce7d
diff --git a/solr/licenses/org.restlet.ext.servlet-2.4.0.jar.sha1 b/solr/licenses/org.restlet.ext.servlet-2.4.0.jar.sha1
new file mode 100644
index 00000000000..1c36a58cdf8
--- /dev/null
+++ b/solr/licenses/org.restlet.ext.servlet-2.4.0.jar.sha1
@@ -0,0 +1 @@
+34fc0a5d08cfe68299887de9790de4d53ab80302
diff --git a/versions.lock b/versions.lock
index 19fcc7f9716..cd7a73ecd4a 100644
--- a/versions.lock
+++ b/versions.lock
@@ -199,8 +199,8 @@ org.jsoup:jsoup:1.12.1 (1 constraints: 3705303b)
 org.locationtech.spatial4j:spatial4j:0.7 (1 constraints: ab041e2c)
 org.ow2.asm:asm:7.2 (2 constraints: 900e3e5e)
 org.ow2.asm:asm-commons:7.2 (1 constraints: ad042e2c)
-org.restlet.jee:org.restlet:2.3.0 (2 constraints: e3159ee6)
-org.restlet.jee:org.restlet.ext.servlet:2.3.0 (1 constraints: 0705fe35)
+org.restlet.jee:org.restlet:2.4.0 (2 constraints: e515d4e6)
+org.restlet.jee:org.restlet.ext.servlet:2.4.0 (1 constraints: 08050136)
 org.rrd4j:rrd4j:3.5 (1 constraints: ac04252c)
 org.slf4j:jcl-over-slf4j:1.7.24 (1 constraints: 4005473b)
 org.slf4j:slf4j-api:1.7.24 (18 constraints: 6ef487eb)
diff --git a/versions.props b/versions.props
index 7f25678af73..544f93dd1f2 100644
--- a/versions.props
+++ b/versions.props
@@ -99,7 +99,7 @@ org.locationtech.spatial4j:*=0.7
 org.mockito:mockito-core=2.23.4
 org.objenesis:objenesis=2.6
 org.ow2.asm:*=7.2
-org.restlet.jee:*=2.3.0
+org.restlet.jee:*=2.4.0
 org.rrd4j:rrd4j=3.5
 org.slf4j:*=1.7.24
 org.tallison:jmatio=1.5