diff --git a/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/helpers/StaticClassTestTemplate.java b/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/helpers/StaticClassTestTemplate.java
index d0658a2f2..7aa6626f0 100644
--- a/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/helpers/StaticClassTestTemplate.java
+++ b/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/helpers/StaticClassTestTemplate.java
@@ -92,7 +92,7 @@ default Stream<DynamicTest> ensureStaticClass() {
         test(
             "{name}'s constructor should raise an UnsupportedOperationException",
             () -> assertThatCode(() -> getSingleConstructor().newInstance())
-                .getCause()
+                .cause()
                 .isInstanceOf(UnsupportedOperationException.class)
                 .hasMessage("static-only class")
         )
diff --git a/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/unit/utils/IoExceptionUtilsTest.java b/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/unit/utils/IoExceptionUtilsTest.java
index cd4ddadb9..abbc5d56c 100644
--- a/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/unit/utils/IoExceptionUtilsTest.java
+++ b/java-compiler-testing/src/test/java/io/github/ascopes/jct/testing/unit/utils/IoExceptionUtilsTest.java
@@ -75,7 +75,7 @@ void runnableWillRethrowAsUncheckedIoExceptionWithStackTrace() {
       throw originalEx;
     })).isInstanceOf(UncheckedIOException.class)
         .hasMessage("%s: %s", originalEx.getClass().getName(), originalEx.getMessage())
-        .getCause()
+        .cause()
         .isSameAs(originalEx)
         .extracting(Throwable::getStackTrace, array(StackTraceElement[].class))
         .isEqualTo(stackTrace);
@@ -141,7 +141,7 @@ void supplierWillRethrowAsUncheckedIoExceptionWithStackTrace() {
       }
     })).isInstanceOf(UncheckedIOException.class)
         .hasMessage("%s: %s", originalEx.getClass().getName(), originalEx.getMessage())
-        .getCause()
+        .cause()
         .isSameAs(originalEx)
         .extracting(Throwable::getStackTrace, array(StackTraceElement[].class))
         .isEqualTo(stackTrace);
@@ -185,7 +185,7 @@ void wrapWithUncheckedIoExceptionWrapsIoExceptionsWithStackTracesCorrectly() {
 
     assertThat(newEx)
         .hasMessage("%s: %s", originalEx.getClass().getName(), originalEx.getMessage())
-        .getCause()
+        .cause()
         .isSameAs(originalEx)
         .extracting(Throwable::getStackTrace, array(StackTraceElement[].class))
         .isEqualTo(stackTrace);
diff --git a/pom.xml b/pom.xml
index dad1c77aa..4911086bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
   </scm>
 
   <properties>
-    <assertj.version>3.22.0</assertj.version>
+    <assertj.version>3.23.1</assertj.version>
     <jimfs.version>1.2</jimfs.version>
 
     <!-- Log verbosity -->