diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index afba10928..d64cd4917 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b1624c473..1af9e0930 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 65dcd68d6..1aa94a426 100755
--- a/gradlew
+++ b/gradlew
@@ -83,10 +83,8 @@ done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -133,10 +131,13 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
@@ -144,7 +145,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
@@ -152,7 +153,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045 
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -197,11 +198,15 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
diff --git a/tritium-lib/build.gradle b/tritium-lib/build.gradle
index 3b503dcc4..b37da5659 100644
--- a/tritium-lib/build.gradle
+++ b/tritium-lib/build.gradle
@@ -1,6 +1,10 @@
 apply plugin: 'com.palantir.external-publish-jar'
 apply plugin: 'com.palantir.metric-schema'
 
+// work around metric-schema gradle 8 task dependency
+tasks.sourcesJar.dependsOn(generateMetrics)
+tasks.sourcesJar.dependsOn(compileMetricSchema)
+
 dependencies {
     api 'io.dropwizard.metrics:metrics-core'
     api project(':tritium-api')
diff --git a/tritium-metrics-jvm/build.gradle b/tritium-metrics-jvm/build.gradle
index 8c189895e..51721c17f 100644
--- a/tritium-metrics-jvm/build.gradle
+++ b/tritium-metrics-jvm/build.gradle
@@ -1,6 +1,10 @@
 apply plugin: 'com.palantir.external-publish-jar'
 apply plugin: 'com.palantir.metric-schema'
 
+// work around metric-schema gradle 8 task dependency
+tasks.sourcesJar.dependsOn(generateMetrics)
+tasks.sourcesJar.dependsOn(compileMetricSchema)
+
 dependencies {
     api 'io.dropwizard.metrics:metrics-core'
     api project(':tritium-registry')
diff --git a/tritium-metrics/build.gradle b/tritium-metrics/build.gradle
index 602319c87..828d8db5f 100644
--- a/tritium-metrics/build.gradle
+++ b/tritium-metrics/build.gradle
@@ -1,6 +1,10 @@
 apply plugin: 'com.palantir.external-publish-jar'
 apply plugin: 'com.palantir.metric-schema'
 
+// work around metric-schema gradle 8 task dependency
+tasks.sourcesJar.dependsOn(generateMetrics)
+tasks.sourcesJar.dependsOn(compileMetricSchema)
+
 dependencies {
     api 'io.dropwizard.metrics:metrics-core'
     api project(':tritium-api')