diff --git a/LEGALNOTICE.md b/LEGALNOTICE.md
index 8d011dceb40..553773b1ada 100644
--- a/LEGALNOTICE.md
+++ b/LEGALNOTICE.md
@@ -58,6 +58,6 @@ and subject to their respective licenses.
 | log4j-api-2.26.1.jar                | Apache 2.0                |
 | log4j-core-2.26.1.jar               | Apache 2.0                |
 | log4j-jul-2.26.1.jar                | Apache 2.0                |
-| rsyntaxtextarea-3.6.3.jar           | BSD-3 clause              |
+| rsyntaxtextarea-4.0.0.jar           | BSD-3 clause              |
 | swingx-all-1.6.5-1.jar              | LGPL 2.1                  |
 | xom-1.4.6.jar                       | LGPL                      |
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index b974c094e4b..d9bf08d6cd7 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -34,7 +34,7 @@ log4j-api12 = { module = "org.apache.logging.log4j:log4j-1.2-api", version.ref =
 log4j-core = { module = "org.apache.logging.log4j:log4j-core", version.ref = "log4j" }
 log4j-jul = { module = "org.apache.logging.log4j:log4j-jul", version.ref = "log4j" }
 log4j-slf4j = { module = "org.apache.logging.log4j:log4j-slf4j-impl", version.ref = "log4j" }
-rsyntaxtextarea = "com.fifesoft:rsyntaxtextarea:3.6.3"
+rsyntaxtextarea = "com.fifesoft:rsyntaxtextarea:4.0.0"
 swingx = "org.swinglabs.swingx:swingx-all:1.6.5-1"
 xom = "xom:xom:1.4.6"