diff --git a/WORKSPACE b/WORKSPACE
index 069e353..92ea4bc 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -8,9 +8,9 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "io_tweag_rules_nixpkgs",
-    sha256 = "1adb04dc0416915fef427757f4272c4f7dacefeceeefc50f683aec7f7e9b787a",
-    strip_prefix = "rules_nixpkgs-0.12.0",
-    urls = ["https://github.com/tweag/rules_nixpkgs/releases/download/v0.12.0/rules_nixpkgs-0.12.0.tar.gz"],
+    sha256 = "30271f7bd380e4e20e4d7132c324946c4fdbc31ebe0bbb6638a0f61a37e74397",
+    strip_prefix = "rules_nixpkgs-0.13.0",
+    urls = ["https://github.com/tweag/rules_nixpkgs/releases/download/v0.13.0/rules_nixpkgs-0.13.0.tar.gz"],
 )
 
 http_archive(
diff --git a/example/WORKSPACE b/example/WORKSPACE
index feb0e5a..bfbf11c 100644
--- a/example/WORKSPACE
+++ b/example/WORKSPACE
@@ -13,9 +13,9 @@ local_repository(
 
 http_archive(
     name = "io_tweag_rules_nixpkgs",
-    sha256 = "1adb04dc0416915fef427757f4272c4f7dacefeceeefc50f683aec7f7e9b787a",
-    strip_prefix = "rules_nixpkgs-0.12.0",
-    urls = ["https://github.com/tweag/rules_nixpkgs/releases/download/v0.12.0/rules_nixpkgs-0.12.0.tar.gz"],
+    sha256 = "30271f7bd380e4e20e4d7132c324946c4fdbc31ebe0bbb6638a0f61a37e74397",
+    strip_prefix = "rules_nixpkgs-0.13.0",
+    urls = ["https://github.com/tweag/rules_nixpkgs/releases/download/v0.13.0/rules_nixpkgs-0.13.0.tar.gz"],
 )
 
 http_archive(
diff --git a/tests/alternative-deps/WORKSPACE b/tests/alternative-deps/WORKSPACE
index 713e47e..ff3e15c 100644
--- a/tests/alternative-deps/WORKSPACE
+++ b/tests/alternative-deps/WORKSPACE
@@ -13,9 +13,9 @@ local_repository(
 
 http_archive(
     name = "io_tweag_rules_nixpkgs",
-    sha256 = "1adb04dc0416915fef427757f4272c4f7dacefeceeefc50f683aec7f7e9b787a",
-    strip_prefix = "rules_nixpkgs-0.12.0",
-    urls = ["https://github.com/tweag/rules_nixpkgs/releases/download/v0.12.0/rules_nixpkgs-0.12.0.tar.gz"],
+    sha256 = "30271f7bd380e4e20e4d7132c324946c4fdbc31ebe0bbb6638a0f61a37e74397",
+    strip_prefix = "rules_nixpkgs-0.13.0",
+    urls = ["https://github.com/tweag/rules_nixpkgs/releases/download/v0.13.0/rules_nixpkgs-0.13.0.tar.gz"],
 )
 
 http_archive(