diff --git a/.travis.yml b/.travis.yml
index 23688e751..db6c50639 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ services:
   - docker
 env:
   global:
-    - TINYTDS_VERSION=2.1.0.pre1
+    - TINYTDS_VERSION=2.1.0.pre2
     - ACTIVERECORD_UNITTEST_HOST=localhost
     - ACTIVERECORD_UNITTEST_DATASERVER=localhost
 rvm:
diff --git a/appveyor.yml b/appveyor.yml
index cb6fb53eb..9024e320c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -2,7 +2,7 @@ init:
   - SET PATH=C:\Ruby%ruby_version%\bin;%PATH%
   - SET PATH=C:\MinGW\msys\1.0\bin;%PATH%
   - SET RAKEOPT=-rdevkit
-  - SET TINYTDS_VERSION=2.1.0.pre1
+  - SET TINYTDS_VERSION=2.1.0.pre2
 clone_depth: 5
 skip_tags: true
 matrix:
diff --git a/circle.yml b/circle.yml
index 26c470f11..b1b4aacdf 100644
--- a/circle.yml
+++ b/circle.yml
@@ -6,7 +6,7 @@ general:
 machine:
   environment:
     PATH: /opt/local/bin:${PATH}
-    TINYTDS_VERSION: 2.1.0.pre1
+    TINYTDS_VERSION: 2.1.0.pre2
     ACTIVERECORD_UNITTEST_HOST: localhost
     ACTIVERECORD_UNITTEST_DATASERVER: localhost
   services:
diff --git a/lib/active_record/tasks/sqlserver_database_tasks.rb b/lib/active_record/tasks/sqlserver_database_tasks.rb
index 9bf106a7c..0c62d58e4 100644
--- a/lib/active_record/tasks/sqlserver_database_tasks.rb
+++ b/lib/active_record/tasks/sqlserver_database_tasks.rb
@@ -50,7 +50,7 @@ def purge
 
       def structure_dump(filename, extra_flags)
         command = [
-          "defncopy",
+          "defncopy-ttds",
           "-S #{Shellwords.escape(configuration['host'])}",
           "-D #{Shellwords.escape(configuration['database'])}",
           "-U #{Shellwords.escape(configuration['username'])}",