diff --git a/changelog.md b/changelog.md
index 1ca4d43..7dca630 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,28 @@
+# v0.7.0 - 25.01.2022
+
+This is a *breaking* release, due to the changes in PR #25.
+
+`NumContext` (and types taking `NumContext` as an argument) are now
+two-fold generic. The floating point like type used during
+computation may now be overwritten.
+
+This is a breaking change, as the `newNumContext` procedure must now
+be given two generic arguments. For most procedures the signature
+was only extended to use `float` as the secondary type, leaving them
+as taking single generic arguments.
+`adapdiveGauss` is an exception and thus now requires the user to
+hand *both* types.
+
+- transition for `adaptiveGauss`:
+  Calling as: `adaptiveGauss[T, float](...)` will produce the old
+  behavior. In the future a nicer interface may be designed.
+- transition for `newNumContext`:
+  Calling as: `newNumContext[T, float]` will produce the old behavior.
+
+This change was a step towards a more (likely concept based) interface
+for SciNim libraries for better interop. It allows for example to
+integrate over a `Measurement`.
+
 # v0.6.3
 
 - fixes an issue that might arise if 2D interpolation is used together
diff --git a/numericalnim.nimble b/numericalnim.nimble
index e874c87..9bc9534 100644
--- a/numericalnim.nimble
+++ b/numericalnim.nimble
@@ -1,5 +1,5 @@
 # Package Information
-version = "0.6.3"
+version = "0.7.0"
 author = "Hugo Granström"
 description = "A collection of numerical methods written in Nim. Current features: integration, ode, optimization."
 license = "MIT"