diff --git a/package.json b/package.json
index afbf983036..08ccc2070d 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "@tryghost/kg-default-cards": "1.2.2",
     "@tryghost/kg-markdown-html-renderer": "1.0.4",
     "@tryghost/kg-mobiledoc-html-renderer": "2.0.1",
-    "@tryghost/members-api": "^0.18.5",
+    "@tryghost/members-api": "0.18.5",
     "@tryghost/members-ssr": "0.7.10",
     "@tryghost/mw-session-from-token": "0.1.3",
     "@tryghost/session-service": "0.1.3",
diff --git a/yarn.lock b/yarn.lock
index 8fc3ebd544..d0436fbd7f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -453,9 +453,9 @@
     jsonwebtoken "^8.5.1"
     lodash "^4.17.15"
 
-"@tryghost/members-api@^0.18.5":
+"@tryghost/members-api@0.18.5":
   version "0.18.5"
-  resolved "https://registry.npmjs.org/@tryghost/members-api/-/members-api-0.18.5.tgz#0041cc86c99834a3a85fddabe1c5c06c4af15396"
+  resolved "https://registry.yarnpkg.com/@tryghost/members-api/-/members-api-0.18.5.tgz#0041cc86c99834a3a85fddabe1c5c06c4af15396"
   integrity sha512-+i+g75urHAgywaaOnGhV+C4x5ZVdbgKpfR3MFe+eqojFX48r5lxk/bkqXxrBo6DP7NCfQjgJkXqqBJs06QJ/SQ==
   dependencies:
     "@tryghost/magic-link" "^0.4.6"