diff --git a/Cargo.lock b/Cargo.lock
index 9c1fa5e8b..322c236a9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2398,7 +2398,7 @@ dependencies = [
 
 [[package]]
 name = "tectonic_engine_spx2html"
-version = "0.0.0"
+version = "0.1.0"
 dependencies = [
  "byteorder",
  "percent-encoding",
@@ -2425,7 +2425,7 @@ dependencies = [
 
 [[package]]
 name = "tectonic_engine_xetex"
-version = "0.1.4"
+version = "0.2.0"
 dependencies = [
  "cc",
  "libc",
diff --git a/Cargo.toml b/Cargo.toml
index 595ffd053..78aabda57 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -73,9 +73,9 @@ tectonic_bridge_core = { path = "crates/bridge_core", version =">=0.3.0,<1"}
 tectonic_bundles = { path = "crates/bundles", version =">=0.2.0,<1", default-features = false }
 tectonic_docmodel = { path = "crates/docmodel", version =">=0.1.2,<1", optional = true }
 tectonic_engine_bibtex = { path = "crates/engine_bibtex", version =">=0.1.0,<1"}
-tectonic_engine_spx2html = { path = "crates/engine_spx2html", version =">=0.0.0,<1"}
+tectonic_engine_spx2html = { path = "crates/engine_spx2html", version =">=0.1.0,<1"}
 tectonic_engine_xdvipdfmx = { path = "crates/engine_xdvipdfmx", version =">=0.1.0,<1"}
-tectonic_engine_xetex = { path = "crates/engine_xetex", version =">=0.1.4,<1"}
+tectonic_engine_xetex = { path = "crates/engine_xetex", version =">=0.2.0,<1"}
 tectonic_errors = { path = "crates/errors", version =">=0.1.0,<1"}
 tectonic_geturl = { path = "crates/geturl", version =">=0.3.0,<1", default-features = false }
 tectonic_io_base = { path = "crates/io_base", version =">=0.3.0,<1"}
diff --git a/crates/engine_spx2html/CHANGELOG.md b/crates/engine_spx2html/CHANGELOG.md
index e69de29bb..46e7fc0bb 100644
--- a/crates/engine_spx2html/CHANGELOG.md
+++ b/crates/engine_spx2html/CHANGELOG.md
@@ -0,0 +1,12 @@
+# tectonic_engine_spx2html 0.1.0 (2022-02-28)
+
+Introduce this crate, which starts implementing Tectonic's HTML output. It uses
+[tera] for templating and a hacked version of [pinot] for parsing font files,
+which turns out to be important for precise typography.
+
+The implementation is still very much preliminary, and the associated HTML and
+CSS templates haven't yet been published anywhere, so it's not very useful as
+yet, but hopefully that will all be changing soon.
+
+[tera]: https://crates.io/crates/tera
+[pinot]: https://crates.io/crates/pinot
diff --git a/crates/engine_spx2html/Cargo.toml b/crates/engine_spx2html/Cargo.toml
index c61c0e78b..8c1dae110 100644
--- a/crates/engine_spx2html/Cargo.toml
+++ b/crates/engine_spx2html/Cargo.toml
@@ -5,7 +5,7 @@
 
 [package]
 name = "tectonic_engine_spx2html"
-version = "0.0.0"
+version = "0.1.0"
 authors = ["Peter Williams <peter@newton.cx>"]
 description = """
 The Tectonic engine that converts SPX output to HTML.
diff --git a/crates/engine_xetex/CHANGELOG.md b/crates/engine_xetex/CHANGELOG.md
index 91623cdbd..1d7721755 100644
--- a/crates/engine_xetex/CHANGELOG.md
+++ b/crates/engine_xetex/CHANGELOG.md
@@ -1,3 +1,20 @@
+# tectonic_engine_xetex 0.2.0 (2022-02-28)
+
+- Use the new `tectonic_xetex_format` crate as part of the build process (#851,
+  #848, @pkgw). This crate defines all of the metadata about the XeTeX engine
+  internals, with versioning, and generates the necessary header files and
+  macros. It also contains code for decoding XeTeX/Tectonic format files, so
+  that we'll be able to introspect engine data structures such as macro
+  definitions.
+- Plumb in some specials that will be used by the prototype HTML output
+  mode (#865, @pkgw)
+- Tidy up some of the auto-generated C code
+- Fix an internal transcription error: `pre_display_direction`, not
+  `pre_display_correction`
+- Fix a long-standing test issue with PNG image dimensions occasionally leading
+  to not-quite-reproducible output (#847, @pkgw)
+
+
 # tectonic_engine_xetex 0.1.4 (2021-07-04)
 
 - Avoid misplaced newlines in warning output ([#803], [@ralismark])
diff --git a/crates/engine_xetex/Cargo.toml b/crates/engine_xetex/Cargo.toml
index 0200fd9d7..9c124094c 100644
--- a/crates/engine_xetex/Cargo.toml
+++ b/crates/engine_xetex/Cargo.toml
@@ -5,7 +5,7 @@
 
 [package]
 name = "tectonic_engine_xetex"
-version = "0.1.4"
+version = "0.2.0"
 authors = ["Peter Williams <peter@newton.cx>"]
 description = """
 The [XeTeX](http://xetex.sourceforge.net/) engine as a reusable crate.