diff --git a/nixpkgs/repositories.bzl b/nixpkgs/repositories.bzl
index b31f56690..df4dd2c53 100644
--- a/nixpkgs/repositories.bzl
+++ b/nixpkgs/repositories.bzl
@@ -15,10 +15,10 @@ def rules_nixpkgs_dependencies(rules_nixpkgs_name = "io_tweag_rules_nixpkgs", to
         http_archive,
         name = "platforms",
         urls = [
-            "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/0.0.11/platforms-0.0.11.tar.gz",
-            "https://github.com/bazelbuild/platforms/releases/download/0.0.11/platforms-0.0.11.tar.gz",
+            "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/1.0.0/platforms-1.0.0.tar.gz",
+            "https://github.com/bazelbuild/platforms/releases/download/1.0.0/platforms-1.0.0.tar.gz",
         ],
-        sha256 = "29742e87275809b5e598dc2f04d86960cc7a55b3067d97221c9abbc9926bff0f",
+        sha256 = "3384eb1c30762704fbe38e440204e114154086c8fc8a8c2e3e28441028c019a8",
     )
     maybe(
         http_archive,
diff --git a/testing/cc/MODULE.bazel b/testing/cc/MODULE.bazel
index 4ca893fe4..26dc0fd19 100644
--- a/testing/cc/MODULE.bazel
+++ b/testing/cc/MODULE.bazel
@@ -23,7 +23,7 @@ bazel_dep(name = "rules_cc", version = "0.0.9")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 
 non_module_deps = use_extension("//:non_module_deps.bzl", "non_module_deps")
diff --git a/testing/core/WORKSPACE.bzlmod b/testing/core/WORKSPACE.bzlmod
index cbc8cd125..4889dd548 100644
--- a/testing/core/WORKSPACE.bzlmod
+++ b/testing/core/WORKSPACE.bzlmod
@@ -15,10 +15,10 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 http_archive(
     name = "platforms",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/0.0.11/platforms-0.0.11.tar.gz",
-        "https://github.com/bazelbuild/platforms/releases/download/0.0.11/platforms-0.0.11.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/1.0.0/platforms-1.0.0.tar.gz",
+        "https://github.com/bazelbuild/platforms/releases/download/1.0.0/platforms-1.0.0.tar.gz",
     ],
-    sha256 = "29742e87275809b5e598dc2f04d86960cc7a55b3067d97221c9abbc9926bff0f",
+    sha256 = "3384eb1c30762704fbe38e440204e114154086c8fc8a8c2e3e28441028c019a8",
 )
 
 http_archive(
diff --git a/testing/go-bzlmod/MODULE.bazel b/testing/go-bzlmod/MODULE.bazel
index 474ea1c3b..adb92e67f 100644
--- a/testing/go-bzlmod/MODULE.bazel
+++ b/testing/go-bzlmod/MODULE.bazel
@@ -29,7 +29,7 @@ bazel_dep(name = "rules_cc", version = "0.0.9")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 
 non_module_deps = use_extension("//:non_module_deps.bzl", "non_module_deps")
diff --git a/testing/java/MODULE.bazel b/testing/java/MODULE.bazel
index 6dec079bf..8e9a189ab 100644
--- a/testing/java/MODULE.bazel
+++ b/testing/java/MODULE.bazel
@@ -23,7 +23,7 @@ bazel_dep(name = "rules_cc", version = "0.0.9")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 single_version_override(
     module_name = "rules_java",
diff --git a/testing/posix/MODULE.bazel b/testing/posix/MODULE.bazel
index a83878756..91395264f 100644
--- a/testing/posix/MODULE.bazel
+++ b/testing/posix/MODULE.bazel
@@ -23,7 +23,7 @@ bazel_dep(name = "rules_sh", version = "0.5.0")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 
 non_module_deps = use_extension("//:non_module_deps.bzl", "non_module_deps")
diff --git a/testing/python/MODULE.bazel b/testing/python/MODULE.bazel
index d91984ca8..98162e12c 100644
--- a/testing/python/MODULE.bazel
+++ b/testing/python/MODULE.bazel
@@ -29,7 +29,7 @@ bazel_dep(name = "rules_cc", version = "0.0.9")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 
 non_module_deps = use_extension("//:non_module_deps.bzl", "non_module_deps")
diff --git a/testing/rust/MODULE.bazel b/testing/rust/MODULE.bazel
index 4eeb482a1..2e7317e3d 100644
--- a/testing/rust/MODULE.bazel
+++ b/testing/rust/MODULE.bazel
@@ -30,7 +30,7 @@ bazel_dep(name = "rules_rust", version = "0.56.0")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 
 # we must use the extension, and we must call the `toolchain` tag
diff --git a/toolchains/nodejs/testing/MODULE.bazel b/toolchains/nodejs/testing/MODULE.bazel
index 8312c7c89..5759a49f3 100644
--- a/toolchains/nodejs/testing/MODULE.bazel
+++ b/toolchains/nodejs/testing/MODULE.bazel
@@ -34,7 +34,7 @@ use_repo(nix_repo, "nixpkgs")
 
 # TODO[AH] Remove these transitive dependencies once nixpkgs_java_configure has
 #   become a module extension in rules_nixpkgs_java.
-bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "rules_java", version = "7.3.1")
 
 non_module_deps = use_extension("//:non_module_deps.bzl", "non_module_deps")