diff --git a/build.gradle b/build.gradle
index 9b7b1ad2..2b957e19 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,7 +13,6 @@ ext {
     checkerFrameworkPath = System.getenv('CHECKERFRAMEWORK') ?: "${jsr308}/checker-framework"
     checkerJar = "${checkerFrameworkPath}/checker/dist/checker.jar"
     afu = "${jsr308}/annotation-tools/annotation-file-utilities"
-    z3Jar = "${projectDir}/lib/com.microsoft.z3.jar"
     lingelingTar = "${projectDir}/lib/lingeling.tar.gz"
     dljcScript = "${jsr308}/do-like-javac/dljc"
 
@@ -67,7 +66,8 @@ dependencies {
 
     implementation 'org.ow2.sat4j:org.ow2.sat4j.core:2.3.6'
     implementation 'org.ow2.sat4j:org.ow2.sat4j.maxsat:2.3.6'
-    implementation files(z3Jar)
+
+    implementation 'tools.aqua:z3-turnkey:4.8.17'
 
     testImplementation fileTree(dir: "${checkerFrameworkPath}/framework-test/build/libs", include: "framework-test-*.jar")
     // Mocking library. Used in a couple tests
@@ -94,13 +94,6 @@ sourceSets {
     }
 }
 
-task buildZ3(type: Exec) {
-    description 'Build Z3 solver'
-    onlyIf { !(new File(z3Jar).exists()) }
-    workingDir './scripts'
-    commandLine './buildZ3'
-}
-
 task buildLingeling(type: Exec) {
     description 'Build Lingeling solver'
     onlyIf { !(new File(lingelingTar).exists()) }
@@ -163,7 +156,6 @@ test {
 }
 
 compileJava {
-    dependsOn(buildZ3)
     dependsOn(buildLingeling)
     dependsOn(buildDLJC)
     options.compilerArgs = [
diff --git a/scripts/buildZ3 b/scripts/buildZ3
deleted file mode 100755
index 595552a6..00000000
--- a/scripts/buildZ3
+++ /dev/null
@@ -1,67 +0,0 @@
-#!/bin/sh
-
-# Fail the whole script if any command fails
-set -e
-
-myDir="`dirname $0`"
-case `uname -s` in
-    CYGWIN*)
-      myDir=`cygpath -m $mydir`
-      ;;
-esac
-
-if [ "$myDir" = "" ];
-then
-    myDir="."
-fi
-
-# Note: travis image uses ubuntu 14.04 and will not work with the 16.04 binaries
-# 14.04 version seems to work locally on all ubuntu versions above 14.04
-UBUNTU_Z3="https://github.com/Z3Prover/z3/releases/download/z3-4.7.1/z3-4.7.1-x64-ubuntu-14.04.zip"
-
-MAC_Z3="https://github.com/Z3Prover/z3/releases/download/z3-4.7.1/z3-4.7.1-x64-osx-10.11.6.zip"
-
-
-case `uname -s` in
-    'Darwin')
-        Z3_ZIP=$MAC_Z3
-        DY_LIB_SUFFIX=dylib
-    ;;
-    *)
-        # Assume it is ubuntu OS.
-        Z3_ZIP=$UBUNTU_Z3
-        DY_LIB_SUFFIX=so
-    ;;
-esac
-
-CFI=$(cd ${myDir}/../ && pwd)
-ROOT=$(cd ${CFI}/../ && pwd)
-
-# z3 jar file and dylib files should either exist together or not exist at all,
-# so just check if the jar file exists.
-if [ -e $ROOT/z3/bin/com.microsoft.z3.jar ] ; then
-    echo "Found existing z3 in $ROOT/z3/bin/, skip downloading z3."
-else
-    echo "Downloading Z3 from $Z3_ZIP..."
-    echo "Running cmd: (cd $ROOT && wget $Z3_ZIP -O z3.zip && unzip z3.zip && mv $ROOT/z3-* $ROOT/z3)"
-    (cd $ROOT && wget -q $Z3_ZIP -O z3.zip && unzip z3.zip && mv $ROOT/z3-* $ROOT/z3)
-    echo "cmd: (cd $ROOT && wget $Z3_ZIP -O z3.zip && unzip z3.zip && mv $ROOT/z3-* $ROOT/z3) Done."
-    echo "Downloaded z3 into directory $ROOT/z3"
-fi
-
-if [ ! -d $CFI/lib ] ; then
-    mkdir $CFI/lib
-fi
-
-# Copy build result into CFI lib dir
-echo "Copying $ROOT/z3/bin/com.microsoft.z3.jar into $CFI/lib"
-(cp $ROOT/z3/bin/com.microsoft.z3.jar $CFI/lib)
-echo "Copy done."
-
-echo "Copying $ROOT/z3/bin/libz3.$DY_LIB_SUFFIX into $CFI/lib"
-(cp $ROOT/z3/bin/libz3.$DY_LIB_SUFFIX $CFI/lib)
-echo "Copy done."
-
-echo "Copying $ROOT/z3/bin/libz3java.$DY_LIB_SUFFIX into $CFI/lib"
-(cp $ROOT/z3/bin/libz3java.$DY_LIB_SUFFIX $CFI/lib)
-echo "Copy done."