diff --git a/Makefile b/Makefile
index 13515e4..f579017 100644
--- a/Makefile
+++ b/Makefile
@@ -114,13 +114,13 @@ set-ratelimit: guard-APIM_ENV
 	< specification/x-nhsd-apim/ratelimit-template.yaml > specification/x-nhsd-apim/ratelimit.yaml
 
 update-spec-template: guard-APIM_ENV
-ifeq ($(APIM_ENV), $(filter $(APIM_ENV), sandbox internal-dev test int ref preprod prod ))
+ifeq ($(APIM_ENV), $(filter $(APIM_ENV), sandbox internal-dev test int ref preprod prod dev ))
 	@ $(MAKE) set-target APIM_ENV=$$APIM_ENV
 	@ $(MAKE) set-access APIM_ENV=$$APIM_ENV
 	@ $(MAKE) set-security APIM_ENV=$$APIM_ENV
 	@ $(MAKE) set-ratelimit APIM_ENV=$$APIM_ENV
 else
-	@ echo ERROR: $$APIM_ENV is not a valid environment. Please use one of [sandbox, internal-dev, int, ref, preprod, prod]
+	@ echo ERROR: $$APIM_ENV is not a valid environment. Please use one of [dev, sandbox, internal-dev, test, int, ref, preprod, prod]
 	@ exit 1;
 endif
 
diff --git a/specification/components/security/security-internal-dev.yaml b/specification/components/security/security-internal-dev.yaml
new file mode 100644
index 0000000..a427260
--- /dev/null
+++ b/specification/components/security/security-internal-dev.yaml
@@ -0,0 +1,4 @@
+nhs-login-p9:
+  $ref: https://proxygen.prod.api.platform.nhs.uk/components/securitySchemes/nhs-login-p9
+app-level3:
+  $ref: https://proxygen.prod.api.platform.nhs.uk/components/securitySchemes/app-level3
diff --git a/specification/x-nhsd-apim/access-internal-dev.yaml b/specification/x-nhsd-apim/access-internal-dev.yaml
new file mode 100644
index 0000000..a5d92a5
--- /dev/null
+++ b/specification/x-nhsd-apim/access-internal-dev.yaml
@@ -0,0 +1,6 @@
+- title: Eligibility Signposting API (Dev Environment)
+  grants:
+    nhs-login-p9: []
+- title: Eligibility Signposting API (Dev Environment) app Level 3 Access
+  grants:
+    app-level3: []
diff --git a/specification/x-nhsd-apim/access-preprod.yaml b/specification/x-nhsd-apim/access-preprod.yaml
index 3a049c2..6c33f5a 100644
--- a/specification/x-nhsd-apim/access-preprod.yaml
+++ b/specification/x-nhsd-apim/access-preprod.yaml
@@ -1,4 +1,6 @@
 - title: Eligibility Signposting API (Pre Production Environment)
   grants:
     nhs-login-p9: []
+- title: Eligibility Signposting API (Pre Production Environment) app Level 3 Access
+  grants:
     app-level3: []
diff --git a/specification/x-nhsd-apim/ratelimit-dev.yaml b/specification/x-nhsd-apim/ratelimit-internal-dev.yaml
similarity index 100%
rename from specification/x-nhsd-apim/ratelimit-dev.yaml
rename to specification/x-nhsd-apim/ratelimit-internal-dev.yaml
diff --git a/specification/x-nhsd-apim/target-dev.yaml b/specification/x-nhsd-apim/target-internal-dev.yaml
similarity index 100%
rename from specification/x-nhsd-apim/target-dev.yaml
rename to specification/x-nhsd-apim/target-internal-dev.yaml
diff --git a/specification/x-nhsd-apim/target-preprod.yaml b/specification/x-nhsd-apim/target-preprod.yaml
index cabb590..4c441ba 100644
--- a/specification/x-nhsd-apim/target-preprod.yaml
+++ b/specification/x-nhsd-apim/target-preprod.yaml
@@ -1,5 +1,5 @@
 type: external
-url: "preprod.eligibility-signposting-api.nhs.uk"
+url: "https://preprod.eligibility-signposting-api.nhs.uk"
 healthcheck: /patient-check/_status
 security:
   type: mtls
diff --git a/specification/x-nhsd-apim/target-prod.yaml b/specification/x-nhsd-apim/target-prod.yaml
index a889c96..a779e58 100644
--- a/specification/x-nhsd-apim/target-prod.yaml
+++ b/specification/x-nhsd-apim/target-prod.yaml
@@ -1,5 +1,5 @@
 type: external
-url: "prod.eligibility-signposting-api.national.nhs.uk"
+url: "https://prod.eligibility-signposting-api.national.nhs.uk"
 healthcheck: /patient-check/_status
 security:
   type: mtls
diff --git a/specification/x-nhsd-apim/target-test.yaml b/specification/x-nhsd-apim/target-test.yaml
index baed574..2451246 100644
--- a/specification/x-nhsd-apim/target-test.yaml
+++ b/specification/x-nhsd-apim/target-test.yaml
@@ -1,5 +1,5 @@
 type: external
-url: "test.eligibility-signposting-api.nhs.uk"
+url: "https://test.eligibility-signposting-api.nhs.uk"
 healthcheck: /patient-check/_status
 security:
   type: mtls