diff --git a/CHANGELOG.md b/CHANGELOG.md
index c0433432..dd53fbc8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,14 +2,19 @@
 
 ## [Unreleased]
 
+## [v0.1.0] 2020-01-20
+
+* Backport two changes to stm32-rs svdpatch.py
+* Set minor version so stm32-rs can potentially rely on this
+
 ## [v0.0.4] 2020-01-12
 
-* Added `strip` & `_strip_end` patching options for stripping bitfields
+* Add `strip` & `_strip_end` patching options for stripping bitfields
 
 ## [v0.0.3] 2020-01-10
 
-* Added missing `black` and `isort` requirements - @jessebraham
-* Added `_strip_end` as an option for patching - @jessebraham
+* Add missing `black` and `isort` requirements - @jessebraham
+* Add `_strip_end` as an option for patching - @jessebraham
 
 ## [v0.0.2] 2019-08-20
 
@@ -18,5 +23,5 @@
 ## [v0.0.1] 2019-08-17
 
 * Initial release, importing from `stm32-rs/scripts/svdpatch.py`
-* Added `click` CLI, to call as `svd patch <yaml-file>`
-* Added packaging
+* Add `click` CLI, to call as `svd patch <yaml-file>`
+* Add packaging
diff --git a/pyproject.toml b/pyproject.toml
index 01ec4f01..20550564 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,8 +12,8 @@ maintainer-email = "n@stalder.io"
 home-page = "https://github.com/stm32-rs/svdtools"
 requires-python = ">=3.6"
 requires = [
-  "click >= 7.0",
-  "PyYAML",
+  "click ~= 7.0",
+  "PyYAML ~= 5.3",
 ]
 classifiers=[
     "License :: OSI Approved :: MIT License",
diff --git a/svdtools/VERSION b/svdtools/VERSION
index 81340c7e..6e8bf73a 100644
--- a/svdtools/VERSION
+++ b/svdtools/VERSION
@@ -1 +1 @@
-0.0.4
+0.1.0
diff --git a/svdtools/patch.py b/svdtools/patch.py
index 30f4027c..8549e262 100644
--- a/svdtools/patch.py
+++ b/svdtools/patch.py
@@ -289,19 +289,29 @@ def derive_peripheral(self, pname, pderive):
         for p in parent.findall("./peripheral[@derivedFrom='{}']".format(pname)):
             p.set("derivedFrom", pderive)
 
-    def copy_peripheral(self, pname, pmod):
+    def copy_peripheral(self, pname, pmod, path):
         """
         Create copy of peripheral
         """
         parent = self.device.find("peripherals")
         ptag = parent.find("./peripheral[name='{}']".format(pname))
-        pcopyname = pmod["from"]
-        pcopy = copy.deepcopy(parent.find("./peripheral[name='{}']".format(pcopyname)))
+        pcopysrc = pmod["from"].split(":")
+        pcopyname = pcopysrc[-1]
+        if len(pcopysrc) == 2:
+            pcopyfile = abspath(path, pcopysrc[0])
+            filedev = Device(ET.parse(pcopyfile))
+            source = filedev.device.find("peripherals")
+        else:
+            source = parent
+        pcopy = copy.deepcopy(source.find("./peripheral[name='{}']".format(pcopyname)))
         if pcopy is None:
             raise SvdPatchError("peripheral {} not found".format(pcopy))
         if ptag is None:
             pcopy.find("name").text = pname
-            raise SvdPatchError("unimplemented")
+            if source is parent:
+                for value in list(pcopy):
+                    if value.tag in ("interrupt"):
+                        pcopy.remove(value)
         else:
             for value in list(ptag):
                 if value.tag in ("name", "baseAddress", "interrupt"):
@@ -309,7 +319,7 @@ def copy_peripheral(self, pname, pmod):
                     if tag is not None:
                         pcopy.remove(tag)
                     pcopy.append(value)
-        parent.remove(ptag)
+            parent.remove(ptag)
         parent.append(pcopy)
 
     def rebase_peripheral(self, pnew, pold):
@@ -885,7 +895,7 @@ def process_device(svd, device, update_fields=True):
     # Handle any copied peripherals
     for pname in device.get("_copy", {}):
         val = device["_copy"][pname]
-        d.copy_peripheral(pname, val)
+        d.copy_peripheral(pname, val, device["_path"])
 
     # Handle any modifications
     for key in device.get("_modify", {}):