diff --git a/mkdocs.yml b/mkdocs.yml
index b3d4d785b9..b0777294a0 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -1,4 +1,4 @@
-site_name: Brain Imaging Data Structure v1.5.0-dev
+site_name: Brain Imaging Data Structure v1.5.0
 theme:
     name: material
     custom_dir: theme_customizations/
diff --git a/src/99-appendices/01-contributors.md b/src/99-appendices/01-contributors.md
index 55ef7e329c..2b7bde68da 100644
--- a/src/99-appendices/01-contributors.md
+++ b/src/99-appendices/01-contributors.md
@@ -41,12 +41,13 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   Fidel Alfaro Almagro 💬📖💡🔌
 -   David Alsop 📖
 -   Stefan Appelhoff 📖💬🤔🐛💡💻👀⚠️📢✅🔧🔌📝🚧🔣
--   Tibor Auer 💬📖💡🔧📢
+-   Tibor Auer 💬📖💡🔧📢🐛🤔
 -   Sylvain Baillet 📖🔍
 -   Arshitha Basavaraj 📖🚇💻
 -   Stephan Bickel 📖
 -   Elizabeth Bock 📖💡
 -   Kristofer Bouchard 📖
+-   Mathieu Boudreau 💬🤔📢
 -   Eric Bridgeford 📖🔧
 -   Teon L. Brooks 📖💻⚠️💬👀🤔🔧🐛📢
 -   Suyash Bhogawar 📖💡⚠️🔧💬
@@ -75,8 +76,10 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   Adeen Flinker 📖
 -   Brett L. Foster 📖
 -   Ana Fouto 📓
+-   Melanie Ganz-Benjaminsen 📖🔣💻🤔📆🔍📢
 -   Remi Gau 📖💻💬📢🐛💻🚇👀🔧🤔
 -   Satrajit S. Ghosh 📖💻
+-   Ashley G. Gillman 📖
 -   Tristan Glatard 📖💻
 -   Mathias Goncalves 💻🔧📢
 -   Krzysztof J. Gorgolewski 📖💻💬🤔🔍📢📝💡🔌
@@ -107,6 +110,7 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   Mainak Jas 📖💻
 -   Alexander Jones 💻🐛
 -   Tamás Józsa 📓
+-   Agah Karakuzu 💬📖🔣🤔
 -   David Keator 📖
 -   James Kent 💬💻
 -   Gregory Kiar 📖💻🎨🔧
@@ -121,13 +125,14 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   Laura and John Arnold Foundation 💵
 -   Christopher Lee-Messer 📖
 -   Jon Haitz Legarreta 💻📖
+-   Dan Levitas 📖
 -   Adam Li 📖💻
 -   Xiangrui Li 📖💻
 -   Vladimir Litvak 📖
 -   Brian N. Lundstrom 📖
 -   Dan Lurie 🤔📖🔧🔌💻💬
 -   Camille Maumet 📖
--   Christopher J. Markiewicz 💬🐛💻📖🎨💡🤔🔌👀🔧📢
+-   Christopher J. Markiewicz 💬🐛💻📖🎨💡🤔🔌👀🔧📢🔣📋🚧
 -   Kai J. Miller 📖
 -   Jeremy Moreau 📖💡
 -   Zachary Michael 📖
@@ -139,13 +144,15 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   B. Nolan Nichols 📖
 -   Thomas E. Nichols 📖📢🔧👀🚧
 -   Dylan Nielson 📖💻🔧
--   Guiomar Niso 📖💡📢
+-   Guiomar Niso 🤔🎨🔍👀📋📝🔧🐛💻🔣✅💬📖💡📢
+-   Martin Noergaard 📖🔣💻🤔📢
 -   Michael P. Notter 💬📝✅📢📖
 -   Jeffrey G. Ojemann 📖
 -   Thomas Okell 📖
 -   Aaron Oliver-Taylor 📖
--   Robert Oostenveld 📖🔧📢💡✅⚠️🤔
+-   Robert Oostenveld 📖🔧📢💡✅⚠️🤔💬🐛📝💻🖋🔣🎨📋🚇👀📓📹
 -   Dimitri Papadopoulos Orfanos 📖💡🤔💬
+-   Eduard Ort 📖
 -   Patrick Park 📖💡💬
 -   Maurice Pasternak 📓
 -   Dianne Patterson 📖
@@ -185,6 +192,7 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   Jessica A. Turner 📖
 -   Pieter Vandemaele 📖💻
 -   Max A. van den Boom 💻👀📖
+-   Wietske van der Zwaag 🔣💬 
 -   Matthias Van Osch 📖
 -   Bradley Voytek 📖
 -   Brian A. Wandell 📖
@@ -194,5 +202,3 @@ If you contributed to the BIDS ecosystem and your name is not listed, please add
 -   Gaël Varoquaux 📖
 -   Tal Yarkoni 💻📖🤔🔍🔌👀📢🐛🎨
 -   Lyuba Zehl 📖
--   Melanie Ganz-Benjaminsen 📖🔣💻🤔📆🔍📢
--   Martin Noergaard 📖🔣💻🤔📢
diff --git a/src/CHANGES.md b/src/CHANGES.md
index 5f33b4ab3b..cc9fd1e4a9 100644
--- a/src/CHANGES.md
+++ b/src/CHANGES.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [Unreleased](https://github.com/bids-standard/bids-specification/tree/HEAD)
+## [v1.5.0](https://bids-specification.readthedocs.io/en/v1.5.0/) (2021-02-23)
 
 -   FIX: Add deprecated anatomical MRI suffixes back into schema [#725](https://github.com/bids-standard/bids-specification/pull/725) ([tsalo](https://github.com/tsalo))
 -   FIX: Correct schema irregularities for func datatype [#724](https://github.com/bids-standard/bids-specification/pull/724) ([tsalo](https://github.com/tsalo))
@@ -36,11 +36,10 @@
 -   \[SCHEMA] Render schema elements in text [#610](https://github.com/bids-standard/bids-specification/pull/610) ([tsalo](https://github.com/tsalo))
 -   \[ENH] Add part entity for complex-valued data [#424](https://github.com/bids-standard/bids-specification/pull/424) ([tsalo](https://github.com/tsalo))
 
-## [v1.4.1](https://github.com/bids-standard/bids-specification/tree/v1.4.1) (2020-10-13)
+## [v1.4.1](https://bids-specification.readthedocs.io/en/v1.4.1/) (2020-10-13)
 
 -   \[INFRA] minor robustness enhancements to pdf build shell script  [#642](https://github.com/bids-standard/bids-specification/pull/642) ([yarikoptic](https://github.com/yarikoptic))
 -   \[FIX] consistent CoordinateSystem fields for ephys [#641](https://github.com/bids-standard/bids-specification/pull/641) ([sappelhoff](https://github.com/sappelhoff))
--   REL: v1.4.1 [#640](https://github.com/bids-standard/bids-specification/pull/640) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[INFRA] set up github action to detect latin phrases [#636](https://github.com/bids-standard/bids-specification/pull/636) ([Remi-Gau](https://github.com/Remi-Gau))
 -   \[ENH] Add a definition for "deprecation" [#634](https://github.com/bids-standard/bids-specification/pull/634) ([sappelhoff](https://github.com/sappelhoff))
 -   \[MISC] consolidate BIDS citations in introduction [#630](https://github.com/bids-standard/bids-specification/pull/630) ([sappelhoff](https://github.com/sappelhoff))
@@ -97,9 +96,8 @@
 -   \[INFRA] Convert entity table to yaml [#475](https://github.com/bids-standard/bids-specification/pull/475) ([tsalo](https://github.com/tsalo))
 -   \[FIX] Recommend SI units formatting to adhere to CMIXF-12 [#411](https://github.com/bids-standard/bids-specification/pull/411) ([sappelhoff](https://github.com/sappelhoff))
 
-## [v1.4.0](https://github.com/bids-standard/bids-specification/tree/v1.4.0) (2020-06-11)
+## [v1.4.0](https://bids-specification.readthedocs.io/en/v1.4.0/) (2020-06-11)
 
--   REL: v1.4.0 [#496](https://github.com/bids-standard/bids-specification/pull/496) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[FIX] Clarify language on unsetting a key/value pair [#495](https://github.com/bids-standard/bids-specification/pull/495) ([nicholst](https://github.com/nicholst))
 -   \[ENH] optionally allow LICENSE file [#483](https://github.com/bids-standard/bids-specification/pull/483) ([sappelhoff](https://github.com/sappelhoff))
 -   \[INFRA] linkchecker - ignore github pull and tree URLs [#477](https://github.com/bids-standard/bids-specification/pull/477) ([yarikoptic](https://github.com/yarikoptic))
@@ -113,20 +111,18 @@
 -   \[FIX] Add reference to PDF on front page of specification [#452](https://github.com/bids-standard/bids-specification/pull/452) ([nicholst](https://github.com/nicholst))
 -   \[INFRA] Add conditional for link-checking releases [#451](https://github.com/bids-standard/bids-specification/pull/451) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[FIX] unordered list formatting in BEP018 [#449](https://github.com/bids-standard/bids-specification/pull/449) ([sappelhoff](https://github.com/sappelhoff))
--   REL: 1.3.1-dev [#448](https://github.com/bids-standard/bids-specification/pull/448) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[FIX] fix inconsistencies for task label between sections [#446](https://github.com/bids-standard/bids-specification/pull/446) ([Remi-Gau](https://github.com/Remi-Gau))
 -   \[FIX] update DECISION-MAKING.md document with new governance [#441](https://github.com/bids-standard/bids-specification/pull/441) ([sappelhoff](https://github.com/sappelhoff))
 -   \[ENH] BEP 003: Common Derivatives [#265](https://github.com/bids-standard/bids-specification/pull/265) ([effigies](https://github.com/effigies))
 -   \[ENH] Add Glossary of terms/abbreviations used in the specification [#152](https://github.com/bids-standard/bids-specification/pull/152) ([yarikoptic](https://github.com/yarikoptic))
 
-## [v1.3.0](https://github.com/bids-standard/bids-specification/tree/v1.3.0) (2020-04-14)
+## [v1.3.0](https://bids-specification.readthedocs.io/en/v1.3.0/) (2020-04-14)
 
 -   \[INFRA] add zenodo badge to README [#447](https://github.com/bids-standard/bids-specification/pull/447) ([sappelhoff](https://github.com/sappelhoff))
 -   \[MISC] Added contributors from VisLab [#444](https://github.com/bids-standard/bids-specification/pull/444) ([VisLab](https://github.com/VisLab))
 -   \[FIX] Clarify  snake_case+CamelCase in TSV+JSON [#442](https://github.com/bids-standard/bids-specification/pull/442) ([sappelhoff](https://github.com/sappelhoff))
 -   \[FIX] Eliminate web/online-specific language [#437](https://github.com/bids-standard/bids-specification/pull/437) ([nicholst](https://github.com/nicholst))
 -   \[INFRA] ensure build_docs_pdf CircleCI job runs last [#436](https://github.com/bids-standard/bids-specification/pull/436) ([sappelhoff](https://github.com/sappelhoff))
--   REL: v1.3.0 [#435](https://github.com/bids-standard/bids-specification/pull/435) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[INFRA] Add issue templates for GitHub [#434](https://github.com/bids-standard/bids-specification/pull/434) ([sappelhoff](https://github.com/sappelhoff))
 -   \[INFRA] Get latest PDF build from CircleCI artifacts [#433](https://github.com/bids-standard/bids-specification/pull/433) ([sappelhoff](https://github.com/sappelhoff))
 -   \[INFRA] Update release protocol [#432](https://github.com/bids-standard/bids-specification/pull/432) ([franklin-feingold](https://github.com/franklin-feingold))
@@ -136,15 +132,13 @@
 -   \[FIX] Unify section titles and table-of-contents entries [#422](https://github.com/bids-standard/bids-specification/pull/422) ([nicholst](https://github.com/nicholst))
 -   \[INFRA] add # before heading in CHANGES [#419](https://github.com/bids-standard/bids-specification/pull/419) ([sappelhoff](https://github.com/sappelhoff))
 -   \[INFRA] fix heading of auto changelog to be a markdown header [#417](https://github.com/bids-standard/bids-specification/pull/417) ([sappelhoff](https://github.com/sappelhoff))
--   REL: 1.3.0-dev [#413](https://github.com/bids-standard/bids-specification/pull/413) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[ENH] Add OPTIONAL EthicsApprovals field to dataset description [#412](https://github.com/bids-standard/bids-specification/pull/412) ([effigies](https://github.com/effigies))
 -   \[ENH] BEP 018 - Genetic Information [#395](https://github.com/bids-standard/bids-specification/pull/395) ([effigies](https://github.com/effigies))
 
-## [v1.2.2](https://github.com/bids-standard/bids-specification/tree/v1.2.2) (2020-02-12)
+## [v1.2.2](https://bids-specification.readthedocs.io/en/v1.2.2/) (2020-02-12)
 
 -   \[FIX] improve wording on data dictionaries [#410](https://github.com/bids-standard/bids-specification/pull/410) ([sappelhoff](https://github.com/sappelhoff))
 -   \[MISC] update contributions by CPernet [#409](https://github.com/bids-standard/bids-specification/pull/409) ([CPernet](https://github.com/CPernet))
--   REL: v1.2.2 [#405](https://github.com/bids-standard/bids-specification/pull/405) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[MISC] Add Sébastien Tourbier to contributors [#394](https://github.com/bids-standard/bids-specification/pull/394) ([sebastientourbier](https://github.com/sebastientourbier))
 -   \[FIX] consistent units description between EEG/MEG/iEEG. Clarify (derived) SI units + prefixes [#391](https://github.com/bids-standard/bids-specification/pull/391) ([sappelhoff](https://github.com/sappelhoff))
 -   \[MISC] moved list of extension proposals to the main BIDS website [#389](https://github.com/bids-standard/bids-specification/pull/389) ([robertoostenveld](https://github.com/robertoostenveld))
@@ -175,17 +169,15 @@
 -   \[FIX] Add CBV and phase to Entity table [#312](https://github.com/bids-standard/bids-specification/pull/312) ([tsalo](https://github.com/tsalo))
 -   \[FIX] Normalization of template-generated standard spaces [#306](https://github.com/bids-standard/bids-specification/pull/306) ([oesteban](https://github.com/oesteban))
 -   \[ENH] Release protocol notes [#304](https://github.com/bids-standard/bids-specification/pull/304) ([franklin-feingold](https://github.com/franklin-feingold))
--   REL: 1.3.0-dev [#303](https://github.com/bids-standard/bids-specification/pull/303) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[INFRA] Adding contributor appendix sentence to PR template  [#299](https://github.com/bids-standard/bids-specification/pull/299) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[ENH] Added discontinuous datatype for EEG and iEEG [#286](https://github.com/bids-standard/bids-specification/pull/286) ([wouterpotters](https://github.com/wouterpotters))
 -   \[FIX] Clarify paragraph about custom data types [#264](https://github.com/bids-standard/bids-specification/pull/264) ([effigies](https://github.com/effigies))
 
-## [v1.2.1](https://github.com/bids-standard/bids-specification/tree/v1.2.1) (2019-08-14)
+## [v1.2.1](https://bids-specification.readthedocs.io/en/v1.2.1/) (2019-08-14)
 
 -   FIX: repair link in anatomical MRI table [#297](https://github.com/bids-standard/bids-specification/pull/297) ([sappelhoff](https://github.com/sappelhoff))
 -   \[ENH] Clarify requirements in Release Protocol [#294](https://github.com/bids-standard/bids-specification/pull/294) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[INFRA+FIX] Use linkchecker (from a dedicated docker image) to check all URLs [#293](https://github.com/bids-standard/bids-specification/pull/293) ([yarikoptic](https://github.com/yarikoptic))
--   REL: v1.2.1 [#291](https://github.com/bids-standard/bids-specification/pull/291) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[ENH] Adding Contributors and updating contributions [#284](https://github.com/bids-standard/bids-specification/pull/284) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[MISC] update Code of Conduct contact [#281](https://github.com/bids-standard/bids-specification/pull/281) ([franklin-feingold](https://github.com/franklin-feingold))
 -   \[ENH] Update contributing guide and README to make discussion forums easy to find [#279](https://github.com/bids-standard/bids-specification/pull/279) ([emdupre](https://github.com/emdupre))
@@ -206,7 +198,6 @@
 -   \[MISC] Document BEPs that are not active anymore, but have not been merged [#240](https://github.com/bids-standard/bids-specification/pull/240) ([sappelhoff](https://github.com/sappelhoff))
 -   \[FIX] remove ManufacturersAmplifierModelName (again) [#236](https://github.com/bids-standard/bids-specification/pull/236) ([robertoostenveld](https://github.com/robertoostenveld))
 -   \[INFRA] Update release protocol [#235](https://github.com/bids-standard/bids-specification/pull/235) ([effigies](https://github.com/effigies))
--   REL: 1.3.0-dev [#234](https://github.com/bids-standard/bids-specification/pull/234) ([effigies](https://github.com/effigies))
 -   \[INFRA] Enable version panel for quickly finding previous versions [#232](https://github.com/bids-standard/bids-specification/pull/232) ([effigies](https://github.com/effigies))
 -   \[FIX] Clarify Appendix II: The list of licenses only lists examples [#222](https://github.com/bids-standard/bids-specification/pull/222) ([sappelhoff](https://github.com/sappelhoff))
 -   \[FIX] Trivial column header fix  [#220](https://github.com/bids-standard/bids-specification/pull/220) ([nicholst](https://github.com/nicholst))
@@ -236,9 +227,8 @@
 -   \[FIX] Specify marker file names for KIT data (MEG) [#62](https://github.com/bids-standard/bids-specification/pull/62) ([monkeyman192](https://github.com/monkeyman192))
 -   \[FIX] Remove father-level for meg filetypes other than BTi/4D data [#19](https://github.com/bids-standard/bids-specification/pull/19) ([teonbrooks](https://github.com/teonbrooks))
 
-## [v1.2.0](https://github.com/bids-standard/bids-specification/tree/v1.2.0) (2019-03-04)
+## [v1.2.0](https://bids-specification.readthedocs.io/en/v1.2.0/) (2019-03-04)
 
--   REL: v1.2.0 [#161](https://github.com/bids-standard/bids-specification/pull/161) ([chrisgorgo](https://github.com/chrisgorgo))
 -   \[MISC] Adding Dimitri Papadopoulos Orfanos to the list of contributors [#157](https://github.com/bids-standard/bids-specification/pull/157) ([DimitriPapadopoulos](https://github.com/DimitriPapadopoulos))
 -   \[FIX] use "specification" not "protocol" to refer to BIDS [#156](https://github.com/bids-standard/bids-specification/pull/156) ([yarikoptic](https://github.com/yarikoptic))
 -   \[FIX] Fix example misalignment [#155](https://github.com/bids-standard/bids-specification/pull/155) ([DimitriPapadopoulos](https://github.com/DimitriPapadopoulos))
@@ -254,9 +244,8 @@
 -   \[MISC] Adding formal decision-making rules [#104](https://github.com/bids-standard/bids-specification/pull/104) ([chrisgorgo](https://github.com/chrisgorgo))
 -   \[FIX] number of small corrections to the specification [#98](https://github.com/bids-standard/bids-specification/pull/98) ([robertoostenveld](https://github.com/robertoostenveld))
 
-## [v1.1.2](https://github.com/bids-standard/bids-specification/tree/v1.1.2) (2019-01-10)
+## [v1.1.2](https://bids-specification.readthedocs.io/en/v1.1.2/) (2019-01-10)
 
--   REL: v.1.1.2 [#121](https://github.com/bids-standard/bids-specification/pull/121) ([chrisgorgo](https://github.com/chrisgorgo))
 -   \[MISC] Update 01-contributors.md [#120](https://github.com/bids-standard/bids-specification/pull/120) ([oesteban](https://github.com/oesteban))
 -   \[ENH] Global fields in data dictionaries [#117](https://github.com/bids-standard/bids-specification/pull/117) ([chrisgorgo](https://github.com/chrisgorgo))
 -   \[MISC] Propose BEP026 MER [#116](https://github.com/bids-standard/bids-specification/pull/116) ([greydongilmore](https://github.com/greydongilmore))