diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2baeae7c717a205b8f550e8bd575f88c0b8c0348..f37c3977e4a564d32c600db0488896602737a100 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -74,16 +74,9 @@ build-coq.8.17.1:
     DENY_WARNINGS: "1"
     MANGLE_NAMES: "1"
 
+# The oldest version runs in MRs, without name mangling.
 build-coq.8.16.1:
   <<: *template
   variables:
     OPAM_PINS: "coq version 8.16.1"
     DENY_WARNINGS: "1"
-
-# The oldest version runs in MRs, without name mangling.
-build-coq.8.15.2:
-  <<: *template
-  <<: *branches_and_mr
-  variables:
-    OPAM_PINS: "coq version 8.15.2"
-    DENY_WARNINGS: "1"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f37282c97dd935faf0035cdd17bb91542cf16ba..45f875030940f04809f9f7f013851aab5f1817e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@ API-breaking change is listed.
 
 ## std++ master
 
-Coq 8.17 is newly supported by this release. Coq 8.12, 8.13 and 8.14 are no
+Coq 8.17 is newly supported by this release. Coq 8.12, 8.13, 8.14, and 8.15 are no
 longer supported by this release.
 
 - Rename `difference_difference` → `difference_difference_l` and
diff --git a/README.md b/README.md
index 0e89c96f73d50e1e6c9c1513cb18808592de40c3..8885a95136e3ece533e4b1006daf32c748beba21 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ Notably:
 
 This version is known to compile with:
 
- - Coq version 8.15.2 / 8.16.1 / 8.17.1 / 8.18.0
+ - Coq version 8.16.1 / 8.17.1 / 8.18.0
 
 Generally we always aim to support the last two stable Coq releases. Support for
 older versions will be dropped when it is convenient.
diff --git a/coq-stdpp.opam b/coq-stdpp.opam
index 09a09511997509d73933229285bc1d83a9c8403c..e2fc1e994547cfe2c1c4e00204d572cb131722f8 100644
--- a/coq-stdpp.opam
+++ b/coq-stdpp.opam
@@ -33,7 +33,7 @@ tags: [
 ]
 
 depends: [
-  "coq" { (>= "8.15" & < "8.19~") | (= "dev") }
+  "coq" { (>= "8.16" & < "8.19~") | (= "dev") }
 ]
 
 build: ["./make-package" "stdpp" "-j%{jobs}%"]