diff --git a/rapids-cmake/cpm/patches/Thrust/transform_iter_with_reduce_by_key.diff b/rapids-cmake/cpm/patches/Thrust/transform_iter_with_reduce_by_key.diff
new file mode 100644
index 00000000..035da3ef
--- /dev/null
+++ b/rapids-cmake/cpm/patches/Thrust/transform_iter_with_reduce_by_key.diff
@@ -0,0 +1,26 @@
+diff --git a/thrust/iterator/transform_input_output_iterator.h b/thrust/iterator/transform_input_output_iterator.h
+index f512a36..a5f725d 100644
+--- a/thrust/iterator/transform_input_output_iterator.h
++++ b/thrust/iterator/transform_input_output_iterator.h
+@@ -102,6 +102,8 @@ template <typename InputFunction, typename OutputFunction, typename Iterator>
+   /*! \endcond
+    */
+ 
++  transform_input_output_iterator() = default;
++
+   /*! This constructor takes as argument a \c Iterator an \c InputFunction and an
+    * \c OutputFunction and copies them to a new \p transform_input_output_iterator
+    *
+diff --git a/thrust/iterator/transform_output_iterator.h b/thrust/iterator/transform_output_iterator.h
+index 66fb46a..4a68cb5 100644
+--- a/thrust/iterator/transform_output_iterator.h
++++ b/thrust/iterator/transform_output_iterator.h
+@@ -104,6 +104,8 @@ template <typename UnaryFunction, typename OutputIterator>
+   /*! \endcond
+    */
+ 
++  transform_output_iterator() = default;
++
+   /*! This constructor takes as argument an \c OutputIterator and an \c
+    * UnaryFunction and copies them to a new \p transform_output_iterator
+    *
diff --git a/rapids-cmake/cpm/versions.json b/rapids-cmake/cpm/versions.json
index 6e9b4aa7..850510b3 100644
--- a/rapids-cmake/cpm/versions.json
+++ b/rapids-cmake/cpm/versions.json
@@ -36,6 +36,11 @@
       "git_url" : "https://github.com/NVIDIA/thrust.git",
       "git_tag" : "${version}",
       "patches" : [
+        {
+          "file" : "Thrust/transform_iter_with_reduce_by_key.diff",
+          "issue" : "Support transform iterator with reduce by key [https://github.com/NVIDIA/thrust/pull/1805]",
+          "fixed_in" : "2.1"
+        },
         {
           "file" : "Thrust/install_rules.diff",
           "issue" : "Thrust 1.X installs incorrect files [https://github.com/NVIDIA/thrust/issues/1790]",