diff --git a/README.md b/README.md
index 2fa04ef9..f298b607 100644
--- a/README.md
+++ b/README.md
@@ -151,7 +151,7 @@ Apache 2.0; see [`LICENSE`](LICENSE) for details.
 
 ### v0.6.x - TBD
 
-### v0.5.x - TBD
+### v0.5.x - 2020-01
 
 * **Breaking Changes**
   * fix!: support full TIMESTAMP range in g::c::spanner::Timestamp (#1166)
diff --git a/ci/test-readme/README.md.in b/ci/test-readme/README.md.in
index fd927f43..694aff8a 100644
--- a/ci/test-readme/README.md.in
+++ b/ci/test-readme/README.md.in
@@ -2,7 +2,7 @@
 
 ### v0.6.x - TBD
 
-### v0.5.x - TBD
+### v0.5.x - 2020-01
 
 * **Breaking Changes**
   * fix!: support full TIMESTAMP range in g::c::spanner::Timestamp (#1166)