diff --git a/changelog.md b/changelog.md
index 79e6e97474d239f18945dc519f14306105979abd..4d537d388f25ef2af2014016d137276be02878b3 100644
--- a/changelog.md
+++ b/changelog.md
@@ -4,7 +4,7 @@ Changes in tpcclib
 This is a concise list of changes; commit messages can be found in the
 [Git repository](https://gitlab.utu.fi/vesoik/tpcclib.git).
 
-## version 0.7.9 (2022-12-21, in development)
+## version 0.7.9 (2022-12-22)
 
 - Fixed code documentation.
 - Bug fix in application taccat.
@@ -13,7 +13,7 @@ This is a concise list of changes; commit messages can be found in the
 - Files with missing CR&LF on last line should work in iftRead() and csvRead() in v1.
 - Better support for long ROI names in TAC data from small animal pipeline.
 - ROI names checked for characters needing encoding when written in XML formats.
-- Invalid pixel values in NIfTI set to zero.
+- SPM saves a lot of NaNs in NIfTI images; invalid pixel values set to zero when reading NIfTI.
 - Updated some tests.
 - Added the Halton sequence, a quasi-random low-discrepancy number generator, in libtpcrand in v2.