diff --git a/src/org/opendatakit/briefcase/reused/UncheckedFiles.java b/src/org/opendatakit/briefcase/reused/UncheckedFiles.java
index e9a64b787..3a78baa07 100644
--- a/src/org/opendatakit/briefcase/reused/UncheckedFiles.java
+++ b/src/org/opendatakit/briefcase/reused/UncheckedFiles.java
@@ -305,6 +305,14 @@ public static InputStream newInputStream(Path path, OpenOption... options) {
     }
   }
 
+  public static void closeInputStream(InputStream inputStream) {
+    try {
+      inputStream.close();
+    } catch (IOException e) {
+      throw new UncheckedIOException(e);
+    }
+  }
+
   public static long size(Path path) {
     try {
       return Files.size(path);
diff --git a/src/org/opendatakit/briefcase/reused/http/CommonsHttp.java b/src/org/opendatakit/briefcase/reused/http/CommonsHttp.java
index 02f91af38..22550fcbd 100644
--- a/src/org/opendatakit/briefcase/reused/http/CommonsHttp.java
+++ b/src/org/opendatakit/briefcase/reused/http/CommonsHttp.java
@@ -39,12 +39,16 @@
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.opendatakit.briefcase.reused.BriefcaseException;
+import org.opendatakit.briefcase.reused.UncheckedFiles;
 import org.opendatakit.briefcase.reused.http.response.Response;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class CommonsHttp implements Http {
   private Executor executor;
   private final int maxConnections;
   private final BasicCookieStore cookieStore;
+  private static final Logger log = LoggerFactory.getLogger(CommonsHttp.class);
 
   private CommonsHttp(Executor executor, int maxConnections, BasicCookieStore cookieStore) {
     this.executor = executor;
@@ -147,6 +151,12 @@ private <T> Response<T> uncheckedExecute(Request<T> request, Executor executor)
       throw new HttpException("The connection has timed out", e);
     } catch (IOException e) {
       throw new UncheckedIOException(e);
+    } finally {
+      request.ifBody(UncheckedFiles::closeInputStream);
+      if (request.multipartMessages != null)
+        request.multipartMessages.stream()
+          .map(MultipartMessage::getBody)
+          .forEach(UncheckedFiles::closeInputStream);
     }
   }
 
diff --git a/src/org/opendatakit/briefcase/reused/http/Request.java b/src/org/opendatakit/briefcase/reused/http/Request.java
index c179d97e0..d3e7f917b 100644
--- a/src/org/opendatakit/briefcase/reused/http/Request.java
+++ b/src/org/opendatakit/briefcase/reused/http/Request.java
@@ -25,6 +25,7 @@
 import java.util.Objects;
 import java.util.Optional;
 import java.util.function.BiConsumer;
+import java.util.function.Consumer;
 import java.util.function.Function;
 import org.opendatakit.briefcase.reused.BriefcaseException;
 import org.slf4j.Logger;
@@ -124,6 +125,10 @@ public InputStream getBody() {
     return body.orElseThrow(BriefcaseException::new);
   }
 
+  public void ifBody(Consumer<InputStream> consumer) {
+    body.ifPresent(consumer);
+  }
+
   public boolean ignoreCookies() {
     return ignoreCookies;
   }
diff --git a/test/java/org/opendatakit/briefcase/reused/UncheckedFilesInputStreamTest.java b/test/java/org/opendatakit/briefcase/reused/UncheckedFilesInputStreamTest.java
new file mode 100644
index 000000000..72a4dbebd
--- /dev/null
+++ b/test/java/org/opendatakit/briefcase/reused/UncheckedFilesInputStreamTest.java
@@ -0,0 +1,58 @@
+package org.opendatakit.briefcase.reused;
+
+import static org.opendatakit.briefcase.reused.UncheckedFiles.createFile;
+import static org.opendatakit.briefcase.reused.UncheckedFiles.createTempDirectory;
+import static org.opendatakit.briefcase.reused.UncheckedFiles.deleteRecursive;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.UncheckedIOException;
+import java.nio.file.Path;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+
+public class UncheckedFilesInputStreamTest {
+  private Path tempDir;
+  private Path temp;
+
+
+  @Before
+  public void setUp() {
+    tempDir = createTempDirectory("briefcase");
+    temp = tempDir.resolve("test.txt");
+    createFile(temp);
+  }
+
+  @After
+  public void tearDown() {
+    deleteRecursive(tempDir);
+  }
+
+  @Test(expected = IOException.class)
+  public void closeInputStream_should_close() throws IOException {
+    InputStream inputStream = UncheckedFiles.newInputStream(temp);
+
+    UncheckedFiles.closeInputStream(inputStream);
+
+    // after close, .available() should throw exception
+    inputStream.available();
+  }
+
+  @Test(expected = UncheckedIOException.class)
+  public void closeInputStream_should_throw_exception() throws IOException {
+    InputStream is = new InputStream() {
+      @Override
+      public int read() throws IOException {
+        return 0;
+      }
+      @Override
+      public void close() throws IOException {
+        throw new IOException("chuchu");
+      }
+    };
+    UncheckedFiles.closeInputStream(is);
+  }
+}