diff --git a/.idea/libraries/buck_lib.xml b/.idea/libraries/buck_lib.xml
index fbc9bd69a49..e70acba4834 100644
--- a/.idea/libraries/buck_lib.xml
+++ b/.idea/libraries/buck_lib.xml
@@ -5,8 +5,6 @@
       <root url="jar://$PROJECT_DIR$/third-party/java/args4j/args4j-2.0.30.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/ini4j/ini4j-0.5.2.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/jsr/jsr305.jar!/" />
-      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-4.4.0.jar!/" />
-      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-platform-4.4.0.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/nailgun/nailgun-server-0.9.3-SNAPSHOT.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/nuprocess/nuprocess-1.1.0.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/stringtemplate/ST-4.0.8.jar!/" />
@@ -26,8 +24,6 @@
     <JAVADOC />
     <SOURCES>
       <root url="jar://$PROJECT_DIR$/third-party/java/args4j/args4j-2.0.30-sources.jar!/" />
-      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-4.4.0-sources.jar!/" />
-      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-platform-4.4.0-sources.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/jsr/jsr305.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/nailgun/nailgun-server-0.9.3-SNAPSHOT-sources.jar!/" />
       <root url="jar://$PROJECT_DIR$/third-party/java/nuprocess/nuprocess-1.1.0-sources.jar!/" />
@@ -40,4 +36,4 @@
       <root url="jar://$PROJECT_DIR$/third-party/java/sqlite/sqlite-jdbc-3.20.0-sources.jar!/" />
     </SOURCES>
   </library>
-</component>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/jna.xml b/.idea/libraries/jna.xml
new file mode 100644
index 00000000000..d05e27b8ef4
--- /dev/null
+++ b/.idea/libraries/jna.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="jna">
+    <CLASSES>
+      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-4.5.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-4.5.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/jna_4_4_0.xml b/.idea/libraries/jna_4_4_0.xml
deleted file mode 100644
index 5c95a1d6f11..00000000000
--- a/.idea/libraries/jna_4_4_0.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="jna-4.4.0">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-4.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
diff --git a/.idea/libraries/jna_platform.xml b/.idea/libraries/jna_platform.xml
new file mode 100644
index 00000000000..542205ed3ee
--- /dev/null
+++ b/.idea/libraries/jna_platform.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="jna-platform">
+    <CLASSES>
+      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-platform-4.5.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-platform-4.5.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/.idea/libraries/jna_platform_4_4_0.xml b/.idea/libraries/jna_platform_4_4_0.xml
deleted file mode 100644
index 3bd1bb6c674..00000000000
--- a/.idea/libraries/jna_platform_4_4_0.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<component name="libraryTable">
-  <library name="jna-platform-4.4.0">
-    <CLASSES>
-      <root url="jar://$PROJECT_DIR$/third-party/java/jna/jna-platform-4.4.0.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>
diff --git a/buck.iml b/buck.iml
index 91f7e4ca2c8..ea8529d2979 100644
--- a/buck.iml
+++ b/buck.iml
@@ -102,8 +102,8 @@
     <orderEntry type="library" name="eden" level="project" />
     <orderEntry type="library" name="java-thrift-dependencies" level="project" />
     <orderEntry type="library" name="xz-java-1.5" level="project" />
-    <orderEntry type="library" name="jna-4.4.0" level="project" />
-    <orderEntry type="library" name="jna-platform-4.4.0" level="project" />
+    <orderEntry type="library" name="jna" level="project" />
+    <orderEntry type="library" name="jna-platform" level="project" />
     <orderEntry type="library" name="diffutils-1.3.0" level="project" />
     <orderEntry type="library" name="okio" level="project" />
     <orderEntry type="library" name="okhttp" level="project" />
diff --git a/build.xml b/build.xml
index 842e8cb610c..02d0842a88e 100644
--- a/build.xml
+++ b/build.xml
@@ -121,8 +121,8 @@
     <include name="jackson/jackson-datatype-guava-2.7.8.jar" />
     <include name="android/sdklib-25.3.0.jar" />
     <include name="nailgun/nailgun-server-0.9.3-SNAPSHOT.jar" />
-    <include name="jna/jna-4.4.0.jar" />
-    <include name="jna/jna-platform-4.4.0.jar" />
+    <include name="jna/jna-4.5.1.jar" />
+    <include name="jna/jna-platform-4.5.1.jar" />
     <include name="sqlite/sqlite-jdbc-3.20.0.jar" />
     <include name="bazel/skylark-lang_deploy.jar" />
     <include name="googleapis/googleapis.jar" />
diff --git a/programs/classpaths b/programs/classpaths
index 4c01576caf2..a148076f21e 100644
--- a/programs/classpaths
+++ b/programs/classpaths
@@ -55,8 +55,8 @@ third-party/java/jackson/jackson-datatype-guava-2.7.8.jar
 third-party/java/jackson/jackson-datatype-jdk8-2.7.8.jar
 third-party/java/jdom/jdom-2.0.6.jar
 third-party/java/jetty/jetty-all-9.4.9.v20180320-uber.jar
-third-party/java/jna/jna-4.4.0.jar
-third-party/java/jna/jna-platform-4.4.0.jar
+third-party/java/jna/jna-4.5.1.jar
+third-party/java/jna/jna-platform-4.5.1.jar
 third-party/java/jopt-simple/jopt-simple-4.6.jar
 third-party/java/json-simple/json-simple-1.1.1.jar
 third-party/java/jsr/javax.inject-1.jar
diff --git a/third-party/java/jna/BUCK b/third-party/java/jna/BUCK
index 41c4649a95c..7c3e5e17bd1 100644
--- a/third-party/java/jna/BUCK
+++ b/third-party/java/jna/BUCK
@@ -1,19 +1,19 @@
 prebuilt_jar(
     name = "jna",
-    binary_jar = "jna-4.4.0.jar",
+    binary_jar = "jna-4.5.1.jar",
     licenses = [
         "LICENSE",
     ],
-    source_jar = "jna-4.4.0-sources.jar",
+    source_jar = "jna-4.5.1-sources.jar",
     visibility = ["PUBLIC"],
 )
 
 prebuilt_jar(
     name = "jna-platform",
-    binary_jar = "jna-platform-4.4.0.jar",
+    binary_jar = "jna-platform-4.5.1.jar",
     licenses = [
         "LICENSE",
     ],
-    source_jar = "jna-platform-4.4.0-sources.jar",
+    source_jar = "jna-platform-4.5.1-sources.jar",
     visibility = ["PUBLIC"],
 )
diff --git a/third-party/java/jna/jna-4.4.0.jar b/third-party/java/jna/jna-4.4.0.jar
deleted file mode 100644
index 521bd92f6a6..00000000000
Binary files a/third-party/java/jna/jna-4.4.0.jar and /dev/null differ
diff --git a/third-party/java/jna/jna-4.4.0-sources.jar b/third-party/java/jna/jna-4.5.1-sources.jar
similarity index 65%
rename from third-party/java/jna/jna-4.4.0-sources.jar
rename to third-party/java/jna/jna-4.5.1-sources.jar
index a6ae1f28882..c4b516c1773 100644
Binary files a/third-party/java/jna/jna-4.4.0-sources.jar and b/third-party/java/jna/jna-4.5.1-sources.jar differ
diff --git a/third-party/java/jna/jna-4.5.1.jar b/third-party/java/jna/jna-4.5.1.jar
new file mode 100644
index 00000000000..68216afbea0
Binary files /dev/null and b/third-party/java/jna/jna-4.5.1.jar differ
diff --git a/third-party/java/jna/jna-platform-4.4.0-sources.jar b/third-party/java/jna/jna-platform-4.5.1-sources.jar
similarity index 73%
rename from third-party/java/jna/jna-platform-4.4.0-sources.jar
rename to third-party/java/jna/jna-platform-4.5.1-sources.jar
index 6f91cca7a18..98308622da3 100644
Binary files a/third-party/java/jna/jna-platform-4.4.0-sources.jar and b/third-party/java/jna/jna-platform-4.5.1-sources.jar differ
diff --git a/third-party/java/jna/jna-platform-4.4.0.jar b/third-party/java/jna/jna-platform-4.5.1.jar
similarity index 89%
rename from third-party/java/jna/jna-platform-4.4.0.jar
rename to third-party/java/jna/jna-platform-4.5.1.jar
index ce54d8f9d95..5aeb3e4e35f 100644
Binary files a/third-party/java/jna/jna-platform-4.4.0.jar and b/third-party/java/jna/jna-platform-4.5.1.jar differ