diff --git a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
index f13ef1e6689..05725829a50 100644
--- a/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
+++ b/codegen/smithy-aws-go-codegen/src/main/resources/software/amazon/smithy/aws/go/codegen/endpoints.json
@@ -21084,8 +21084,18 @@
           "ap-southeast-3" : { },
           "ap-southeast-4" : { },
           "ap-southeast-5" : { },
-          "ca-central-1" : { },
-          "ca-west-1" : { },
+          "ca-central-1" : {
+            "variants" : [ {
+              "hostname" : "swf-fips.ca-central-1.amazonaws.com",
+              "tags" : [ "fips" ]
+            } ]
+          },
+          "ca-west-1" : {
+            "variants" : [ {
+              "hostname" : "swf-fips.ca-west-1.amazonaws.com",
+              "tags" : [ "fips" ]
+            } ]
+          },
           "eu-central-1" : { },
           "eu-central-2" : { },
           "eu-north-1" : { },
@@ -21094,6 +21104,20 @@
           "eu-west-1" : { },
           "eu-west-2" : { },
           "eu-west-3" : { },
+          "fips-ca-central-1" : {
+            "credentialScope" : {
+              "region" : "ca-central-1"
+            },
+            "deprecated" : true,
+            "hostname" : "swf-fips.ca-central-1.amazonaws.com"
+          },
+          "fips-ca-west-1" : {
+            "credentialScope" : {
+              "region" : "ca-west-1"
+            },
+            "deprecated" : true,
+            "hostname" : "swf-fips.ca-west-1.amazonaws.com"
+          },
           "fips-us-east-1" : {
             "credentialScope" : {
               "region" : "us-east-1"
@@ -31086,8 +31110,32 @@
       },
       "swf" : {
         "endpoints" : {
-          "us-iso-east-1" : { },
-          "us-iso-west-1" : { }
+          "fips-us-iso-east-1" : {
+            "credentialScope" : {
+              "region" : "us-iso-east-1"
+            },
+            "deprecated" : true,
+            "hostname" : "swf-fips.us-iso-east-1.c2s.ic.gov"
+          },
+          "fips-us-iso-west-1" : {
+            "credentialScope" : {
+              "region" : "us-iso-west-1"
+            },
+            "deprecated" : true,
+            "hostname" : "swf-fips.us-iso-west-1.c2s.ic.gov"
+          },
+          "us-iso-east-1" : {
+            "variants" : [ {
+              "hostname" : "swf-fips.us-iso-east-1.c2s.ic.gov",
+              "tags" : [ "fips" ]
+            } ]
+          },
+          "us-iso-west-1" : {
+            "variants" : [ {
+              "hostname" : "swf-fips.us-iso-west-1.c2s.ic.gov",
+              "tags" : [ "fips" ]
+            } ]
+          }
         }
       },
       "synthetics" : {
@@ -31774,7 +31822,19 @@
       },
       "swf" : {
         "endpoints" : {
-          "us-isob-east-1" : { }
+          "fips-us-isob-east-1" : {
+            "credentialScope" : {
+              "region" : "us-isob-east-1"
+            },
+            "deprecated" : true,
+            "hostname" : "swf-fips.us-isob-east-1.sc2s.sgov.gov"
+          },
+          "us-isob-east-1" : {
+            "variants" : [ {
+              "hostname" : "swf-fips.us-isob-east-1.sc2s.sgov.gov",
+              "tags" : [ "fips" ]
+            } ]
+          }
         }
       },
       "synthetics" : {