diff --git a/com.ibm.wala.cast.test/build.gradle b/com.ibm.wala.cast.test/build.gradle
index 19e7c09fc..33469953a 100644
--- a/com.ibm.wala.cast.test/build.gradle
+++ b/com.ibm.wala.cast.test/build.gradle
@@ -36,15 +36,6 @@ def addCastRpath(currentJvm, targetPlatform, linker) {
 	}
 }
 
-static final def addCastEnvironment(task, xlatorLibrary) {
-	final def castLibrary = xlatorLibrary.libs[2]
-	if (castLibrary == null) return
-	final def castLibraryFile = castLibrary.linkFiles.singleFile
-	final def castLibraryDirectory = castLibraryFile.parent
-	assert castLibraryDirectory.endsWith('/com.ibm.wala.cast/build/libs/cast/shared')
-	task.environment 'DYLD_LIBRARY_PATH', castLibraryDirectory
-}
-
 model {
 	components {
 		xlator_test(JniNativeLibrarySpec) {
@@ -92,8 +83,6 @@ model {
 			def lib = linkXlator_testSharedLibrary
 			dependsOn lib
 			systemProperty 'java.library.path', lib.destinationDirectory.get().asFile
-
-			addCastEnvironment(it, $.binaries.xlator_testSharedLibrary)
 		}
 
 		checkSmoke_main(Exec) {
@@ -122,8 +111,6 @@ model {
 
 			// all combined as a colon-delimited path list
 			args pathElements.join(':')
-
-			addCastEnvironment(it, $.binaries.xlator_testSharedLibrary)
 		}
 
 		check.dependsOn checkSmoke_main
diff --git a/com.ibm.wala.cast/build.gradle b/com.ibm.wala.cast/build.gradle
index 9b4b52108..8b78f1a33 100644
--- a/com.ibm.wala.cast/build.gradle
+++ b/com.ibm.wala.cast/build.gradle
@@ -82,6 +82,9 @@ model {
 						.find { it.targetPlatform.name == targetPlatform.name }
 						.sharedLibraryLinkFile.parent
 					linker.args "-Wl,-rpath,$libDir"
+					if (targetPlatform.operatingSystem.name == 'osx') {
+						linker.args "-Wl,-install_name,@rpath/$sharedLibraryFile.name"
+					}
 				}
 			}
 		}