diff --git a/CHANGELOG.md b/CHANGELOG.md
index db34aa4d..4e3735e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 * Make rediraffe the default extension for page redirects
 * Add default templates for the Canonical cookie banner and Google Analytics.
 * Add an `AUTOBUILD_EXTRA_OPTS` variable to extend sphinx-autobuild options for `make run`.
+* Pin dependencies to major versions.
 
 ### Changed
 
@@ -21,7 +22,8 @@
 * `docs/Makefile` [#551](https://github.com/canonical/sphinx-docs-starter-pack/pull/551), [#552](https://github.com/canonical/sphinx-docs-starter-pack/pull/552)
 * `docs/redirects.txt` [#558](https://github.com/canonical/sphinx-docs-starter-pack/pull/558)
 * `docs/_templates/header.html` [#549](https://github.com/canonical/sphinx-docs-starter-pack/pull/549)
-* `docs/_templates/footer.html` [#549](https://github.com/canonical/sphinx-docs-starter-pack/pull/549), [#594](https://github.com/canonical/sphinx-docs-starter-pack/pull/94)
+* `docs/_templates/footer.html` [#549](https://github.com/canonical/sphinx-docs-starter-pack/pull/549), [#594](https://github.com/canonical/sphinx-docs-starter-pack/pull/594)
+* `docs/requirements.txt` [#596](https://github.com/canonical/sphinx-docs-starter-pack/pull/596)
 
 ## 1.5
 
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 6016a35a..0b2e2789 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -4,30 +4,30 @@ canonical-sphinx~=0.6
 # Extensions previously auto-loaded by canonical-sphinx
 myst-parser~=4.0    # v5.0.0 causes version conflicts
 sphinx-autobuild
-sphinx-design
-sphinx-notfound-page
-sphinx-reredirects
-sphinx-tabs
-sphinxcontrib-jquery
-sphinxext-opengraph
-sphinx-rerediraffe
+sphinx-design==0.6.1
+sphinx-notfound-page~=1.1
+sphinx-reredirects==0.1.6
+sphinx-tabs~=3.5
+sphinxcontrib-jquery~=4.1
+sphinxext-opengraph~=0.13
+sphinx-rerediraffe>=0.0.3, <1.0.0
 
 # Extra extensions, previously bundled as canonical-sphinx-extensions
-sphinx-config-options>=0.1.0
-sphinx-contributor-listing>=0.1.0
-sphinx-filtered-toctree>=0.1.0
-sphinx-related-links>=0.1.2
-sphinx-roles>=0.1.0
-sphinx-terminal>=1.0.2
-sphinx-ubuntu-images>=0.1.0
-sphinx-youtube-links>=0.1.0
+sphinx-config-options~=0.1
+sphinx-contributor-listing~=0.1
+sphinx-filtered-toctree~=0.1
+sphinx-related-links~=0.1
+sphinx-roles~=0.1
+sphinx-terminal~=1.0
+sphinx-ubuntu-images~=0.1
+sphinx-youtube-links~=0.1
 
 # Other dependencies
-packaging
-sphinxcontrib-svg2pdfconverter[CairoSVG]
-sphinx-last-updated-by-git
-sphinx-sitemap
+packaging~=26.1
+sphinxcontrib-svg2pdfconverter[CairoSVG]~=2.1
+sphinx-last-updated-by-git~=0.3
+sphinx-sitemap~=2.9
 
 # Vale dependencies
 rst2html
-vale
+vale~=3.13